LGA775 Motherboard Compatibility List for Intel Xeon 5000 & 3000 Series

What determines LGA775 compatibility with Quad-Core Xeon 5000 and 3000 series?

Compatibility depends primarily on the chipset and the supported Front Side Bus (FSB) frequency. You should also pay attention to the maximum TDP supported by the motherboard and official support for Quad-Core processors.

Don’t forget that for proper operation, you will also need to flash a Modded BIOS with Xeon microcodes. Keep in mind that meeting these criteria alone cannot guarantee a 100% successful boot or stable operation.

LGA775 Chipset Compatibility

Since the LGA775 socket had an incredibly long lifecycle, dozens of chipsets were released for it, developed both by Intel and third-party vendors (NVIDIA, VIA, SiS, etc.).

Let’s look at the most popular and common options and their compatibility with the two Xeon lineages: the 5000 and 3000 series.

Chipset	Xeon 5xxx support	Xeon 3xxx support
Q45, Q43, Q35, Q33	NO	YES
X48, X38	NO	YES
nForce 680i, 650i	POSSIBLE **	YES
P965	YES *	YES
G45, G43, G41, G35, G33, G31	YES	YES
nForce 790i, 780i, 740i, 630i	YES **	YES
GeForce 9400, 9300	YES	YES
P31	YES	YES
P35	YES ***	YES
P43	YES ***	YES
P45	YES ***	YES

* The P965 chipset is technically compatible with the Xeon 5000 series, but operation is often unstable, and you should forget about overclocking right away.

** NForce chipsets are also not the best choice. The lower-end 650i and 680i are often completely incompatible with the 5000 series (though exceptions exist), while the higher-end 790i, 780i, 740i, and 630i tend to suffer from excessive heat generation.

*** P35, P43, and P45 are the best choices if you plan to overclock. Motherboards based on these chipsets are also more likely to feature a robust VRM.

Officially Suggested CPU Support

You can often determine the maximum Xeon capability of a motherboard by looking at its top-tier officially supported consumer processor. Official support for Core 2 Quad (assuming a compatible chipset) significantly increases the chances of running a Quad-Core Xeon successfully.

Highest officially supported CPU	Xeon compatibility
Core 2 Quad Q9650	All 45 nm Xeons (e.g., E5450–E5470 and equivalents)
Core 2 Quad Q9550S	All 45 nm Xeons up to 65 W (e.g., L5430, L5420, L3360 and equivalents)
Core 2 Quad Q6700	All 65 nm Xeons (e.g., X5365, X5355, X3230 and equivalents)
Core 2 Duo E8600	All 45 nm dual-core Xeons
Core 2 Duo E6850	All 65 nm dual-core Xeons

Unofficial LGA775 Motherboard Compatibility List for Intel Xeon

This is an unofficial, community-sourced compatibility table covering motherboards that can run Intel Xeon processors for LGA771 and LGA775 (including common 771→775 adapter mods). The data is compiled by our team and fellow enthusiasts, with some entries taken from public sources around the web.

Important disclaimer

We cannot test every motherboard, so the table is not guaranteed to be 100% complete or accurate.
For boards that haven’t been verified in practice, compatibility is inferred from:

• Chipset family and its typical CPU support
• Maximum supported TDP and VRM capability
• Supported front‑side bus (FSB) speeds

Actual results can depend on BIOS version, modified microcode support, and board revision. Use at your own risk.

Contribute your results

If you’ve successfully run a Xeon on a specific motherboard, please share your findings with us via the contact page. Your report helps improve the table for everyone.

Abit

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Abit AW9D-MAX	975X / ICH7R	1066	130	Q6700, QX6800	All 65 nm Xeons with 1066 FSB
✅ Confirmed working: L5320
Abit IL9 Pro	945P / ICH7	1066	65	E6700 (see note)	ⓘ Likely not compatible
⏳ Not tested yet ⚠️ Note: Supports older 65 nm Core 2 Duo CPUs.
Abit IP35 Pro	P35 / ICH9R	1333	130	Q9550, QX9650	ⓘ Likely all
✅ Confirmed working: E5420 ⚠️ Note: A CPU microcode update may be required to enable overclocking. A BIOS update is required to support 45 nm Xeon E0 stepping.
Abit IP35-E	P35 / ICH9	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460 (C0), E5472, E5440, E5420

Asrock

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
ASRock 4Core1600-GLAN	P31 / G31	1333	136	Q9650, QX9770	All
✅ Confirmed working: L5420
ASRock 4Core1600P35-WiFi	P35 / ICH9R	1600	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5472
ASRock 4Core1600Twins-P35	P35 / ICH9	1600	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: L5420
ASRock 4CoreN73PV-HD720p	nForce 630i	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450
ASRock 775Dual-VSTA	VIA PT880 Pro/Ultra / VIA VT8237A	1066	80	E6700	ⓘ Likely all
✅ Confirmed working: E5410 ⚠️ Note: 1333 FSB CPUs may run only at 1066 (below rated speed). Only older Core 2 Duo CPUs are officially supported.
ASRock G31M-GS	G31 / ICH7	1333	105	Q9650, Q6600 (all steppings)	All
✅ Confirmed working: E5450
ASRock G31M-S	G31 / ICH7	1333	130	Q9650, Q6600 (all steppings)	All
✅ Confirmed working: X5460, E5410, L5430, E5345
ASRock G31M-VS2	G31 / ICH7	1333	130	Q9650	All
✅ Confirmed working: E5410, E5450
ASRock G41C-GS	G41 / ICH7	1333	130	Q9650	All
✅ Confirmed working: X5470, X5460, X5450, X5260
ASRock G41M-VS3	G41 / ICH7	1333	130	Q9650	All
✅ Confirmed working: X5450, E5420, E5205, L5420 (E0, C0)
ASRock N7ad sli	nForce 740i SLI	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5460 (SLBBA E0)
ASRock P43 Pro/USB3	P43 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: L5430
ASRock P43D1600Twins-1394	P43 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5430 (C0)
ASRock P43DE	P43 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: 51XX, 52XX, 53XX, 54XX
ASRock P43Twins1600	P43 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5462 (C0), E5430
ASRock P45DE	P45 / ICH10	1600	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450
ASRock P45DE3	P45 / ICH10	1600	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: L5430
ASRock P45R2000-WiFi	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5460 (SLBBA E0)
ASRock P45TS	P45 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5430
ASRock P45x3	P45 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5440
ASRock P45XE	P45 / ICH10	1600	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: X5472
ASRock P5B-DE	P965 / ICH8	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450, X5460
ASRock P5D-BE	P965 / ICH8	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5420 (E0)

Asus

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
ASUS Commando	P965 / ICH8	1333	130	Q9650 (beta), QX9650 (beta)	All
✅ Confirmed working: E5450 (E0)
ASUS Maximus Formula (version 1)	X38 / ICH9R	1600	136	Q9650, QX9770, Q6700, E8600, E6850	ⓘAll 3xxx series Xeons. Not compatible with 5xxx series.
✅ Confirmed working: X3363 (E0)
ASUS Maximus II Formula	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492, X5450 (E0), E5450, X5460, X5470
ASUS Maximus II Gene	P45 / ICH10R	1600	150	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: X5492
ASUS P5B	P965 / ICH8	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450 (C0), E5440, L5430
ASUS P5B Deluxe	P965 / ICH8R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5440 (C0), E5450 (E0), E5430
ASUS P5B Premium	P965 / ICH8R	1066	130	Q6700, QX6850	ⓘAll 65 nm Xeons
❌ Did not POST: L5410 (C0)
ASUS P5B SE	P965 / ICH8	1333	136	Q9650, QX9770	All
✅ Confirmed working: L5420 (C0)
ASUS P5B-E	P965 / ICH8R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450
ASUS P5B-Plus	P965 / ICH8R	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5450 ⚠️ Note: All 1333 FSB CPUs should work.
ASUS P5B-VM DO	Q965 / ICH8DO	1066 (official), 1333 (should work)	95	Q6700 (official), possibly Q9650	ⓘLikely all
✅ Confirmed working: E5440
ASUS P5E-Deluxe	X48 / ICH9R	1600	136	QX9770, Q9650, Q6700, E8600, E6850	ⓘAll 3xxx series Xeons
⏳ Not tested yet
ASUS P5E-VM DO	Q35 / ICH9DO	1333	130	Q9650, QX9650, Q6700, E8600, E6850	ⓘ3xxx series
❌ Did not POST: E5410 (E0), L5420, E5335 ⚠️ Note: One report that E5410 (E0) works on this platform, but three reports that 5xxx series Xeons do not. 5xxx series may not be supported.
ASUS P5E-VM HDMI	G35 / ICH9R	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5450 (C0), L5420
ASUS P5G41-M LE	G41 / ICH7	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: E5420 (E0)
ASUS P5G41C-M	G41 / ICH7	1333	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5470
ASUS P5G41C-M LX	G41 / ICH7	1333	95	Q9650, Q6600 (95 W only)	All
✅ Confirmed working: E5420, E5405 (E0)
ASUS P5G41T-M LX	G41 / ICH7	1333	120	Q9650, Q6600 (95 W only)	All
✅ Confirmed working: E5472, X5460, X5450, E5420 (E0), L5420, E5405
ASUS P5G41T-M LX Plus	G41 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450, X5460 (SLBBA)
ASUS P5G41T-M LX2/GB	G41 / ICH7	1333	150	Possibly Q9650	All
✅ Confirmed working: X5492
ASUS P5G41T-M LX3	G41 / ICH7	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5460, E5440, E5345
ASUS P5G41T-M SI	G41 / ICH7	1333	136	Possibly Q9650, QX9770	ⓘLikely all
✅ Confirmed working: E5420
ASUS P5G41T-m7 Lx2BR	G41 / ICH7	1333	80	At least Q9550 (C0). Q9650 may also be supported.	ⓘLikely all
✅ Confirmed working: E5450 ⚠️ Note: No official CPU support list; unclear if Q9650 E0 stepping is supported.
ASUS P5K	P35 / ICH9	1600	136	Q9650, QX9700	ⓘLikely all
✅ Confirmed working: X5460 (E0 & C0), X5450 (E0 & C0), E5450 (C0 SLANQ), E5440 (E0), E5430, E5420 (E0), L5420 (E0), X3363 ⚠️ Note: One report of instability with X5482 at stock; stable after tuning frequency.
ASUS P5K Deluxe	P35 / ICH9R	1600	136	Q9650, QX9700	All
✅ Confirmed working: E5430, L5420
ASUS P5K Premium	P35 / ICH9R	1600	136	Q9650, QX9700	All
✅ Confirmed working: E5472 (C0), E5420, L5420
ASUS P5K Pro	P35 / ICH9R	1600	136	Q9650, QX9700	All
✅ Confirmed working: E5440 (C0), X5450
ASUS P5K SE	P35 / ICH9	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450, X3363
ASUS P5K SE/EPU	P35 / ICH9	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5460 (C0), E5450 ⚠️ Note: One report of instability with E5462 at 1600 FSB. Works with 1333 FSB Xeons. Microcode updates did not help.
ASUS P5K-E	P35 / ICH9R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450 (E0), E5440, E5430, X5450
ASUS P5K-VM	G33 / ICH9	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: X5460, E5440
ASUS P5K/EPU	P35 / ICH9	1600	136	Q9650, QX9700	All
✅ Confirmed working: E5440 (C0)
ASUS P5K3 Deluxe	P35 / ICH9R	1600	136	Q9650, QX9770	All
⏳ Not tested yet
ASUS P5K64 WS	P35 / ICH9R	1333	136	QX9770, Q9650, Q6700, E8600	All
✅ Confirmed working: X5470
ASUS P5KC	P35 / ICH9	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5450 (C0), E5450, E5420 (E0)
ASUS P5KLP SE	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: L5410
ASUS P5KPL	G31 / ICH7	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5460 (E0)
ASUS P5KPL AM/PS (rev 2.01G)	G31 / ICH7	1333	150	Q9650, QX9770	All
✅ Confirmed working: X5482
ASUS P5KPL SE	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5450, E5440
ASUS P5KPL-AM	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: E5450 (SLANQ), X5460 (SLANP), X5450 (E0), L5420
ASUS P5KPL-AM EPU (rev 1.01G)	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5450 (E0), L5420
ASUS P5KPL-AM SE (rev 1.01G)	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5460, E5472 (E0), E5450 (C0), E5440 (E0), E5420, E5410, L5420, L5410 ❌ Did not POST: E5405 ⚠️ Note: Bootloader fails with E5405 (works on other boards).
ASUS P5KPL-CM	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: X3323
ASUS P5KPL-VM	G31 / ICH7	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: L5420
ASUS P5KPL/1600	G31 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: L5420
ASUS P5KR	P35 / ICH9R	1600	136	Q9650, QX9770	All
✅ Confirmed working: L5420, E5472
ASUS P5N-D	nForce 750i SLI (C72P) / nForce 430 (MCP51)	1333	130	Q9650, QX9650	ⓘMixed results. See note.
✅ Confirmed working: E5450, X5460 (C0) ⚠️ Note: Reports of instability with X5460 (C0) and X5450 (C0).
ASUS P5N-E SLI	nForce 650i	1333	130	Q6700, QX6850, unofficially Q9650	ⓘLikely all
✅ Confirmed working: X5450, E5440, E5450
ASUS P5N-EM HDMI	nForce 630i	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5260
ASUS P5N-MX	NVIDIA GeForce 7050 / nForce 610i	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450 (C0)
ASUS P5N-T Deluxe (rev 1.02G)	nForce 780i SLI / nForce 570 SLI	1333	136	Q9650, QX9770	All
✅ Confirmed working: E5450
ASUS P5N32-E SLI	nForce 680i SLI	1333	130	Official: Q6700, E8600, E6850, QX6850	ⓘMay only support 65 nm quad-core Xeons by default (see note).
✅ Confirmed working: X5460 (C0) ⚠️ Note: Officially supports only 65 nm quad-core CPUs. Microcode update may be required for 45 nm quad-core Xeons. Overclocking not possible.
ASUS P5N73-AM	nForce 610i	1333	130	Q9550 (E0), QX9650, Q6700, E8500, E6850	All
✅ Confirmed working: X5460
ASUS P5N7A-VM (rev 1.04G)	GeForce 9300 / nForce 730i	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5470
ASUS P5NT WS	nForce 680i SLI	1333	130	QX6850, Q6700, E8600, E6850	ⓘAll (see note)
✅ Confirmed working: X5450 (E0) ⚠️ Note: Officially supports only 65 nm quad-core CPUs, but reports indicate 45 nm X5450 works.
ASUS P5P43TD (rev 1.00G)	P43 / ICH10	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460 (E0), E5450, X5450
ASUS P5P43TD PRO (rev 1.02G)	P43 / ICH10R	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5460
ASUS P5Q	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450, E5430 (SLANU), X5450, E5462 (E0), L5430
ASUS P5Q Deluxe	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5450, X5460 (E0)
ASUS P5Q Premium	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492, X5470
ASUS P5Q Pro	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460, E5450, E5462, E5430, E5440
ASUS P5Q Pro Turbo	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460, E5450, E5472
ASUS P5Q SE	P45 / ICH10	1600	136	Q9650, QX9770, Q6700, E8600, E6850	ⓘAll (see note)
✅ Confirmed working: E5450 ❌ Did not POST: E5472 ⚠️ Note: One report that E5472 (1600 FSB) is unstable. 1333 FSB Xeons (e.g., E5450) work well.
ASUS P5Q SE PLUS	P45 / ICH10	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492 (E0), E5472 (E0), E5450 (C0), L5420 (SLBBR E0)
ASUS P5Q SE/R	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450
ASUS P5Q SE2	P45 / ICH10	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5472, E5420 (SLBBL)
ASUS P5Q Turbo	P45 / ICH10R	1600	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5450 (E0)
ASUS P5Q-E	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450, E5440, X5470, X5460, L5430
ASUS P5Q-EM	G45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460 (SLBBA), E5450, L5420 (E0)
ASUS P5Q-SE2 (rev 1.00G)	P45 / ICH10	1600	136	Q9650, Q6700, Q6600, QX9770	All
⏳ Not tested yet
ASUS P5Q3 (rev 1.00G)	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450, E5472, L5430, L5420
ASUS P5Q3 Deluxe	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5470, E5450 (C0), X5460 (C0), E5440 (C0), X5450 (E0 & C0), E5420 (E0), E5462, X5482 (E0), L5420 (E0), E5472
ASUS P5QC	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5482 (C0), E5472 (E0), E5462 (C0), E5450 (C0), E5440 (C0), E5430 (C0)
ASUS P5QD Turbo	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5472, E5450 (E0)
ASUS P5QL PRO	P43 / ICH10	1333	136	Q9650, QX9770	All
✅ Confirmed working: E5410, E5450, X3353
ASUS P5QL-E	P43 / ICH10R	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5470, E5450, L5420
ASUS P5QL-EM	G43 / ICH10	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450 (BIOS ver. 802)
ASUS P5QL-VM EPU (rev 1.01G)	G43 / ICH10	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460
ASUS P5QL/EPU (rev 1.00G)	P43 / ICH10	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: X5470
ASUS P5QLD PRO	P43 / ICH10	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5450 (C0)
ASUS P5QPL-AM (rev 1.00G)	G41 / ICH7	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (E0)
ASUS P5W DH Deluxe	975X / ICH7R	1066	150	Q6700	ⓘAll (see note)
✅ Confirmed working: X5450 (E0) (see note), E5405 (E0) ⚠️ Note: You can try 1333 FSB CPUs if you unlock the FSB. X5450 downclocked to 2.8 GHz for stability. Xeon microcodes added. 1333 FSB isn’t officialy supported.
ASUS P5WDG2 WS Professional	975X / ICH7R	1333	130	Q9550 (C0), Q6700, E8500 (C0), E6850	ⓘLikely all
✅ Confirmed working: X5450 (C0) ⚠️ Note: Q9650 is not on the official CPU list, and E0 stepping Xeons are not supported without a MOD BIOS/microcode update.
ASUS PN57A-VM	GeForce 9300	1333	120	At least Q9550 (C0)	ⓘLikely all
✅ Confirmed working: X5450 (C0) ⚠️ Note: One report: disable “C State Tech” in BIOS to stop slow boot and high CPU load.
ASUS Striker Extreme	nForce 680i SLI (C55XE) / NVIDIA MCP55XE	1333	130	Q6700, E8600	ⓘ65 nm quads (official). Reports that 45 nm quads also work.
✅ Confirmed working: X5460
ASUS Striker II Extreme	nForce 780i SLI (C73XE rev B1)	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5472 (SLANR C0)
ASUS Striker II Formula	nForce 780i SLI (C55XE)	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5470

Biostar

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Biostar G31-M7 TE	G31 / ICH7	1333	95	Q9650, Q6700, E6850	All
⏳ Not tested yet
Biostar G41 DVI	G41 / ICH7	1333	95	Q9550 (C1 stepping), Q6600 (95 W only)	All
✅ Confirmed working: E5450
Biostar G41D3+	G41 / ICH7	1333	95	Q9550 (C1 stepping)	ⓘAt least Harpertown C0; E0 likely possible
✅ Confirmed working: E5430
Biostar g41D3C	G41 / ICH7	1333	95	Q9550 (C0), E8600, E6850	ⓘAll (see note)
✅ Confirmed working: E5450 (E0) ⚠️ Note: Some users see a warning that the CPU exceeds 95 W (even when it does not). Press F10 to bypass the warning and boot anyway. Adding Xeon microcodes to the BIOS may resolve the issue.
Biostar P35D2-A7	P35 / ICH9	1333	115	Q9300 (official)	ⓘLikely all (see note)
⏳ Not tested yet ⚠️ Note: Q9650 is not on the official list, but the BIOS includes its microcode; all 45 nm quad-core Xeons may work.
Biostar P43D2-A7	P43 / ICH10	1333	105	Possibly Q9650	All
✅ Confirmed working: E5450
Biostar TForce P965	P965 / ICH8	1333	130	Q6600, E6850	ⓘAll 65 nm Xeons
⏳ Not tested yet ⚠️ Note: No 45 nm CPU microcodes in the BIOS.
Biostar TP43D2-A7	P43 / ICH10	1333	105	Q9550 (SLAWQ)	ⓘLikely all
✅ Confirmed working: E5440
Biostar TP43E XE (ver 5.x)	P43 / ICH10	1333	136	Q9550 (E0 stepping), QX9770	All
✅ Confirmed working: E5472, L5420
Biostar TP45D2-A7	P45 / ICH10	1333	120	Q9650, Q6600, E8500, E6850	ⓘLikely all
✅ Confirmed working: X5460, E5472, X5450, E5410 (C0/E0), L5408, E5310 (B3/G0) ⚠️ Note: Official CPU list is outdated. Xeon microcodes may be required.
Biostar TPower i45 (ver 5.x)	P45 / ICH10R	1333	136	Q9550 (E0 stepping), QX9770	All
✅ Confirmed working: X5450

Clevo

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Clevo D900C	P965	1333	95	Q9650	ⓘLikely all
✅ Confirmed working: E5450
Clevo D901C	P965 / ICH8R	1333	95	Q9650	ⓘAll 3xxx series Xeons supported; 5xxx series may be incompatible.
✅ Confirmed working: X3363 ❌ Did not POST: E5450 ⚠️ Note: E5450 and X3363 were tested. Specialized/niche systems; not very common.

Dell

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Dell Inspiron 518	G33	1333	120	Q9650, Q6700	All
✅ Confirmed working: X5450, E5450
Dell Inspiron 530 (DG33M03)	G33 / ICH9	1333	95	Q9650	All
✅ Confirmed working: E5450 (E0), E5440 (E0)
Dell Inspiron 530/530s (G33M-02)	G33 / ICH9	1333	80	Core 2 Duo	ⓘLikely all dual-core Xeons
✅ Confirmed working: X5160, X5270
Dell Inspiron 535/535s (G31T-DM)	G31 / ICH9R	1333	120	Q9650	All
✅ Confirmed working: X5470
Dell Inspiron 545/545s (DG33M-05)	G33 / ICH9R	1333	120	Q9650	All
✅ Confirmed working: X5470
Dell Optiplex 330 (KP561)	G31 / ICH7R	1333	95	Q6700; Q9550 (C0)	ⓘNo full E0 support; C0 works well
✅ Confirmed working: E5450 (C0), E5440 (C0), 5160
Dell Optiplex 360 (T656F)	G31 / ICH7	1333	95	Q9550 (C0)	ⓘNo full E0 support; C0 works well
✅ Confirmed working: E5440 (C0)
Dell Optiplex 380 (HN7XN)	G41 / ICH7	1333	95	Possibly Q9650	ⓘLikely all
✅ Confirmed working: E5450 (C0)
Dell Optiplex 755 (Y225C)	Q35 / ICH9DO	1333	95	Q9650	ⓘAll 3xxx series; 5xxx not compatible
✅ Confirmed working: X3363 (E0), X3323 ❌ Did not POST: E5440 ⚠️ Note: All form factors should work. Clear/Reset BIOS is required.
Dell Optiplex 760 (M859N)	Q43 / ICH10	1333	95	Q9650, E8600 (no 65 nm support)	ⓘAll 45 nm 3xxx series; 5xxx not supported; 65 nm Xeons likely not supported
✅ Confirmed working: X3363
Dell Optiplex 780 (G785M)	Q45 / ICH10DO	1333	95	Q9650	ⓘAll 3xxx series; 5xxx not compatible
✅ Confirmed working: X3363 ⚠️ Note: All form factors should work (except USFF).
Dell Precision T3400 (TP412)	X38	1333	130	Q9650, QX9650	ⓘAll 3xxx series; 5xxx not compatible
✅ Confirmed working: X3363, X3323, X3360
Dell Studio 540 (M017G)	G45 / ICH10R	1333	120	Q9650, Q6700	ⓘUnstable (see note)
❌ Did not POST: see note ⚠️ Note: Reports of instability. Updating microcode is not recommended.
Dell Vostro 200 (G33M02)	G33 / ICH9	1333	80	Dual-core only	ⓘAll dual-core Xeons
✅ Confirmed working: X5260, 5160
Dell Vostro 220 / 220s (G45M03)	G45 / ICH10R	1333	120	Possibly Q9650	All
✅ Confirmed working: X5470, X5450, X5365, E5450
Dell Vostro 230 / 230s (MIG41R)	G41 / ICH7	1333	120	Possibly Q9650	All
✅ Confirmed working: X5450
Dell Vostro 400 (G33M03)	G33 / ICH9	1333	120	Q9650	All
✅ Confirmed working: X5470, X5365
Dell Vostro 410 (DG33A01)	G33 / ICH9	1333	120	Possibly Q9650	ⓘLikely all
✅ Confirmed working: X5450 ⚠️ Note: No official CPU list found; cannot verify Q9650 E0 stepping.
Dell Vostro 420 (G45A01)	G45 / ICH9R	1333	95	Q9650	ⓘLikely all
✅ Confirmed working: X5450 (see note) ⚠️ Note: 95 W CPUs recommended. X5450 (120 W) unstable until multiplier reduced from 9 to 8.
Dell XPS 430	X48	1333	95	Q9650	ⓘAll 45 nm 3xxx model Xeons
✅ Confirmed working: X3363
Dell XPS 630i	nForce 650i SLI	1333	120	Q9650, Q6600, QX6800	All
✅ Confirmed working: X5470, X5460 (C0), E5420 (C0), X5365
Dell XPS 720	nForce 680i SLI	1333	130	At least Q6600, QX6800	ⓘShould support all 65 nm quad-core Xeons
✅ Confirmed working: X5365 ❌ Did not POST: X5470 (45 nm)
Dell XPS 730 (F642F CN-0F642F)	nForce 790i	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470

DFI

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
DFI Blood Iron P35-T2RL	P35 / ICH9R	1333	130	Q6700, E6850	ⓘAll (see note)
✅ Confirmed working: E5450 (E0) ⚠️ Note: Only 65 nm CPUs supported by default; update microcode to use 45 nm Xeons.
DFI Lanparty DK P45-t3rsb PLUS	P45	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5440
DFI LANPARTY JR GF9400-T2RS	GeForce 9400	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460
DFI LP DK P35-T2RS	P35 / ICH9R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450 (E0)
DFI LP UT P35-T2R	P35	1333	130	Q9550, QX9650, Q6700	All
⏳ Not tested yet
DFI P45-T2RS	P45 / ICH10R	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460

ECS

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
ECS G31T-M7	G31 / ICH7	1333	95	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5440, E5430
ECS g33t-am (from Philips desktop)	G33 / ICH9	1333	95	Q6700	ⓘAll 65 nm
✅ Confirmed working: E5345 ⚠️ Note: Acer also uses this board. Use Acer BIOS to add microcodes.
ECS G41T-M12	G41 / ICH7	1333	95	Q9650 (no Q6600 support)	All
⏳ Not tested yet
ECS G41T-M7 (rev 1.0)	G41 / ICH7	1333	95	Q9650, Q6700, E8600	All
✅ Confirmed working: E5440 (C0) ⚠️ Note: Disable C1E in BIOS if the system runs slowly. Update microcodes to enable SSE 4.1.
ECS P4M800Pro-M (v2.0)	VIA P4M800Pro / VIA VT8237R+	1066	95	Officially 65 nm dual-core only	ⓘSee note
✅ Confirmed working: E5450 (C0) ⚠️ Note: Add latest microcodes to enable Xeon 1333 FSB, 45 nm, and quad-core support.

eMachines

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
eMachines EL1830	nForce 630i	1066	50		ⓘLikely supports all 50 W and lower 65 nm Xeons
✅ Confirmed working: L5320

EVGA

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
EVGA 730i	nForce 730i	1333	80		ⓘAt least 65 nm dual-core Xeons; quad-core unknown
✅ Confirmed working: 5160
EVGA 750i FTW	nForce 750i SLI / nForce 430	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460
EVGA 780i SLI FTW	nForce 780i	1600	150	Q9650	All
✅ Confirmed working: X5492, X5460 (E0)
EVGA 790i FTW	nForce 790i SLI	1600	130	Q9650, QX9650	All
✅ Confirmed working: X5470
EVGA NF66	nForce 650i Ultra	1333	95	Q9650	All
✅ Confirmed working: E5450
EVGA nForce 680i SLI (122-CK-NF68)	nForce 680i	1333	120	Possibly Q9650	ⓘLikely all
✅ Confirmed working: X5450, E5450 (E0), E5420
EVGA nForce 780i SLI	nForce 780i	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5460, X5470

Foxconn

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Foxconn G31M	G31 / ICH7	1333	105	Q9650, Q6700, Q6600 (all steppings)	All
✅ Confirmed working: E5450 (SLANQ)
Foxconn G31MX-K	G31 / ICH7	1333	105	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450
Foxconn G31MXP	G31 / ICH7	1333	130	Q9650	All
⏳ Not tested yet
Foxconn G41MXE	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450 (SLBBM)
Foxconn G41MXF (rev 2.0)	G41 / ICH7	1333	95	Q9650	All
✅ Confirmed working: E5420
Foxconn G41MXP	G41 / ICH7	1333	120	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5450
Foxconn G41S-K	G41 / ICH7	1333	65	Q9550S	All
⏳ Not tested yet
Foxconn MCP73M01H1 (Napa-GL8E)	GeForce 7100 / nForce 630i	1333	95	E8xxx, E6850	All
⏳ Not tested yet ⚠️ Note: Used in HP Pavilion a6600f.
Foxconn MCP73S01	GeForce 7100 / nForce 630i	1333	120	Q9650	All
✅ Confirmed working: X5460 (E0)
Foxconn mcp7am01p8-1.0-8eksh		1333	95	Q9650	ⓘLikely all
✅ Confirmed working: E5440, E5430 ⚠️ Note: No microcode update needed.
Foxconn P35A-S	P35 / ICH9R	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (E0)
Foxconn P35AX-S	P35 / ICH9	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5405
Foxconn P43A	P43 / ICH10	1333	130	Q9550, Q6700, E8600, E6850, QX9650	All
✅ Confirmed working: E5160 ⚠️ Note: No microcode update needed.
Foxconn P45A-S	P45 / ICH10R	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450

Fujitsu

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Fujitsu D2841-A1	G41	1333	80	Possibly Q9650	ⓘLikely all
✅ Confirmed working: E5405
Fujitsu Esprimo E3521	G41	1333	80	Q9550	ⓘLikely all
✅ Confirmed working: E5450

Gigabyte

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Gigabyte 965GM-S2	G965 / ICH8	1066	130	Q6700, Q6600 (all steppings), QX6800	ⓘAt least all 65 nm Xeons with 1066 FSB
✅ Confirmed working: L5320
Gigabyte 965P-DQ6 (rev 3.3)	P965 / ICH8R	1333	136	Q9650 (unofficial), QX9650 (unofficial)	All
✅ Confirmed working: X5355
Gigabyte 965P-DS3 (rev 3.3)	P965 / ICH8	1333	130	Q9650 (unofficial), QX9650 (unofficial)	All
✅ Confirmed working: E5450, X5460, X5260, L5420 (E0)
Gigabyte 965P-DS3P (rev 1.3 & 3.3)	P965 / ICH8R	1333	130	Q9650 (unofficial), QX9650 (unofficial)	All
✅ Confirmed working: E5420, X5460
Gigabyte 965P-DS4 (rev 1)	P965 / ICH8R	1333	130	Q9650, Q6700, QX6800	All
✅ Confirmed working: X5460 (E0), E5450 (E0) ⚠️ Note: Only 1066 FSB is officially supported; 1333 MHz may have issues. Only 65 nm quads are officially supported, but 45 nm quads should work.
Gigabyte 965P-S3 (rev 3.3)	P965 / ICH8	1333	130	Q9650 (unofficial), QX9650 (unofficial)	ⓘ65 nm quads (official), possibly 45 nm quads (unofficial)
✅ Confirmed working: E5440 (C0), X5260 (3.33 GHz dual-core)
Gigabyte EG31MF-S2	G31 / ICH7	1333	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5460
Gigabyte EG41MF-US2H	G41 / ICH7	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5450, L5430
Gigabyte EG45M-DS2H	G45 / ICH10R	1333	150	Q9650, QX9770	All
✅ Confirmed working: X5450, X5492
Gigabyte EP31-DS3L	P31 / ICH7	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5450
Gigabyte EP35-DS3	P35 / ICH9	1333	135	Q9650, QX9770 (with OC)	All
✅ Confirmed working: X5460 (E0), E5450
Gigabyte EP35-DS3L	P35 / ICH9	1333	135	Q9650, QX9770 (with OC)	All
✅ Confirmed working: E5450 (SLBBM)
Gigabyte EP35-DS4	P35 / ICH9R	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: L5430
Gigabyte EP35C-DS3R	P35 / ICH9R	1333	136	Q9650, QX9770 (with OC)	All
✅ Confirmed working: E5450
Gigabyte EP41-UD3L (rev 1)	G41 / ICH7	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5460 (E0)
Gigabyte EP41T-USB3	G41 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5450
Gigabyte EP43-DS3	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5450 (C0), E5440, E5430
Gigabyte EP43-DS3L	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: L5420
Gigabyte EP43-S3L	P43 / ICH10	1333	136	Q9650, QX9770	All
✅ Confirmed working: E5410
Gigabyte EP43-UD3L	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: X5460
Gigabyte EP43T-S3L	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5450
Gigabyte EP43T-UD3L	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: X5460 (E0), E5450
Gigabyte EP45-DS3	P45 / ICH10	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450, X5470
Gigabyte EP45-DS3L	P45 / ICH10	1600	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: L5420
Gigabyte EP45-DS3P	P45 / ICH10R	1600	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450
Gigabyte EP45-DS4	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450 (E0), E5472
Gigabyte EP45-UD3L	P45 / ICH10	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5460, X5492, E5420, E5410, E5405
Gigabyte EP45-UD3P	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492, X5470, X5460 (E0), E5450, E5440, L5240, X3353
Gigabyte EP45C-DS3	P45 / ICH10	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450
Gigabyte EP45C-DS3R	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450, L5430
Gigabyte EP45C-UD3R	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492 (overclocked to 4 GHz)
Gigabyte EP45T-DS3R	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450, X5460
Gigabyte EP45T-EXTREME	P45 / ICH10R	1600	136	Q9650, QX9770	All
⏳ Not tested yet
Gigabyte EP45T-UD3LR	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492, X5460, E5430, E5462 (E0), L5430
Gigabyte EP45T-UD3R	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450
Gigabyte EP45T-USB3P	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460
Gigabyte EX38-DQ6	X38 / ICH9R	1600	135	Q9650, QX9770	ⓘAll 3xxx series Xeons supported; 5xxx not compatible
✅ Confirmed working: X3363 ❌ Did not POST: E5440
Gigabyte G31M-ES2C (rev 1)	G31 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5440 (C0)
Gigabyte G31M-S2L	G31 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460, E5335, L5430, E5405, E5310
Gigabyte G41M-ES2H	G41 / ICH7	1333	95	Q9650	All
✅ Confirmed working: E5420
Gigabyte G41M-ES2L	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (95 W only)	All
✅ Confirmed working: E5450
Gigabyte G41MT-D3	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (95 W only)	All
✅ Confirmed working: L5430
Gigabyte G41MT-ES2L	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (95 W only)	All
✅ Confirmed working: X3353
Gigabyte G41MT-S2P (rev 1.3)	G41 / ICH7	1333	95	Q9650	All
✅ Confirmed working: E5430
Gigabyte G41MT-S2PT	G41 / ICH7	1333	120	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5460 (C0), E5450 (E0)
Gigabyte GA-73PVM-S2H	GeForce 7300 / nForce 630i	1333	130	Q9650, Q6700, E8600, E6850, QX9650	All
✅ Confirmed working: X5450, E5440, X3363
Gigabyte GA-945GCM-S2L	945GC / ICH7	1066		Only older Core 2 Duos supported (no quad-core)	ⓘLikely incompatible
⏳ Not tested yet
Gigabyte GA-E7AUM-DS2H (rev 1.0)	GeForce 9400M	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5470, L5410 (SLAP4)
Gigabyte GA-EP35-DS3R	P35 / ICH9R	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (E0)
Gigabyte GA-EP45-UD3LR	P45 / ICH10R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5420
Gigabyte GA-EP45-UD3R	P45 / ICH10R	1600	150	Q9650, QX9770	All
✅ Confirmed working: X5492, X5482 (E0), X5460 (C0), L5420
Gigabyte GA-EQ45M-S2 (rev 1.0)	Q45 / ICH10DO	1333	136	Q9650, QX9770, Q6700, E8600, E6850	ⓘAll 3xxx series Xeons; 5xxx series possibly incompatible
⏳ Not tested yet
Gigabyte GA-G31M-ES2L	G31 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460 (E0), E5462, E5450 (C0), E5405 (E0)
Gigabyte GA-G33M-DS2R	G33 / ICH9R	1333	136	QX9770, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5472, L5420 ⚠️ Note: Microcode update required for Windows 8.1 & 10 64-bit.
Gigabyte GA-G33M-S2	G33 / ICH9	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: L5430
Gigabyte GA-G33M-S2L	G33 / ICH9	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: E5430, E5462
Gigabyte GA-G41M-Combo	G41 / ICH7	1333	120	Q9650	All
✅ Confirmed working: X5460, X5450 (E0), E5440 (C0), E5420 (E0), E5410 (E0), E5405, L5430, X3323
Gigabyte GA-P31-DS3L	P31 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: X5460, X5260
Gigabyte GA-P31-S3G	P31 / ICH7	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5470
Gigabyte GA-P35-DS3	P35 / ICH9	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (E0), E5440 (E0)
Gigabyte GA-P35-DS3P	P35 / ICH9R	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (E0, C0)
Gigabyte GA-P35C-DS3R	P35 / ICH9R	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: X5460 (E0) ⚠️ Note: Booted on stock F12 BIOS.
Gigabyte P31-ES3G	P31 / ICH7	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450
Gigabyte P35-DQ6	P35 / ICH9R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450 (C0)
Gigabyte P35-DS3L	P35 / ICH9	1333	135	Q9650, QX9770	All
✅ Confirmed working: X5460 (C0), E5440, L5410
Gigabyte P35-DS3R	P35 / ICH9R	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5440, E5420, E5405
Gigabyte P35-DS4 (rev 2.1 verified; rev 1.0 should work)	P35 / ICH9R	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5440, L5420
Gigabyte P35-S3G	P35 / ICH9	1333	135	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450, E5410
Gigabyte P35C-DS3R	P35 / ICH9R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5440 (E0), L5240
Gigabyte P41-ES3G	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: X5260 (3.33 GHz dual-core)
Gigabyte P43-ES3G	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: X5470, X5460 (C0), E5430, E5462
Gigabyte P43T-ES3G (rev 1.3 verified; rev 1.0 should work)	P43 / ICH10	1333	135	Q9650, QX9770	All
✅ Confirmed working: E5462
Gigabyte P45T-ES3G	P45 / ICH10	1600	120	Q9650, Q6700, Q6600 (95 W only), E8600, E6850	All
✅ Confirmed working: X5460 (C0)
Gigabyte X38T-DQ6	X38 / ICH9R	1600	135	Q9650, QX9770	ⓘAll 3xxx series Xeons (5xxx not compatible)
✅ Confirmed working: X3363

HP

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
HP Compaq 8000 Elite Mid tower	Q45		95	Q9650, E8600	ⓘLikely incompatible
❌ Did not POST: X3363 ⚠️Note: No boot, black screen CPU works on other motherboards BIOS update did not help
HP DX2400	G33 / ICH9R	1333	120	Q9650	All
✅ Confirmed working: X5450, E5440
HP IPIBL-LB (Benicia)	G33 / ICH9	1333	95	Possibly Q9650	All
✅ Confirmed working: E5450, L5420 (E0, C0) ⚠️Note: Microcode update required Used in: HP Pavilion Media Center m8430f, HP DX2400, HP Elite Pavilion M94245F
HP Pavilion p6110y (Asus IP-IBL motherboard)	G33	1333	95	Q9550 (C0)	ⓘPossibly all
✅ Confirmed working: E5450 (C0) ⚠️Note: No official CPU support list found; unsure if E0 stepping is supported
HP Pro 3000 MT	G45S / ICH10R	1333	95	Q9650, E8600	ⓘAll 45 nm Xeons
✅ Confirmed working: E5410
HP xw4600	X38 / ICH9R	1333	95	Q9650, E8600	ⓘ45 nm 3xxx series Xeon
❌ Did not POST: E5430 (C0) ⚠️Note: One report says a 5xxx series Xeon (E5440) worked on X38, but other reports say E5430 does not, so the latter is more likely. No supported 65 nm CPU list; likely not supported.

Intel

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Intel DG31PR	G31 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450
Intel DG33FBC	G33 / ICH9DH	1333	95	Q9650, Q6600 (95 W only)	ⓘ5xxx series Xeons not supported (3xxx unknown)
❌ Did not POST: E5450, X5460 ⚠️ Note: Failed for two users; the X5460 CPUs worked in other motherboards. Supports Intel Viiv Technology.
Intel DG33M04	G33 / ICH9	1333	95	Q9650, Q6700	All
✅ Confirmed working: E5450
Intel DG33TL	G33 / ICH9R	1333	105	Q9650, Q6600 (G0 & B3)	ⓘ5xxx series Xeons not supported (3xxx unknown)
❌ Did not POST: X5450, E5450 ⚠️ Note: Multiple attempts reported. Supports Intel Viiv Technology.
Intel DG35EC	G35 / ICH8	1333	95	Q9650	ⓘBoard likely incompatible
❌ Did not POST: X3353 (works in other boards)
Intel DG41MJ	G41 / ICH7	1333	65	Q9550S	All
✅ Confirmed working: L5430
Intel DG41RQ	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	ⓘAll 1333 FSB Xeons
✅ Confirmed working: E5450 (E0), E5420 (E0), E5410 (E0), X3353 ❌ Did not POST: E5472
Intel DG41TX	G41 / ICH7	1333	95	Q9650, Q6700	All
✅ Confirmed working: E5450
Intel DG41TY (AA Rev. 203)	G41 / ICH7	1333	95	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5430 (C0) ⚠️ Note: E0 stepping Xeons may lack SpeedStep, SSE4.1, and VT-x by default. C0 and older steppings do not have this issue. A microcode update likely fixes it, but that is difficult on Intel-branded boards.
Intel DG41WV	G41	1333	120	Q9650, E8600	ⓘAll 45 nm Xeons
✅ Confirmed working: X5460 ⚠️ Note: 65 nm CPUs are not on the supported list.
Intel DG45FC	G45 / ICH10R	1333	65	Q9550S, E8500, E6850	All
✅ Confirmed working: E5450 (E0) ⚠️ Note: 80 W E5450 works despite a 65 W board limit. System may fail to boot or fail to restart.
Intel DG45ID (AA#310)	G45 / ICH10R	1333	95	Q9650	All
✅ Confirmed working: E5450 (E0), L5248 (ES) ⚠️ Note: Supports Intel Viiv Technology.
Intel DG965SS	G965	1066	130	See note	ⓘPossibly all
✅ Confirmed working: E5310 (G0), E5320 (B3), L5408 (E0) ⚠️ Note: Officially supports only dual-cores, but quads should also work. 1333 FSB is not supported. May only work with older BIOS versions (before 1577). Reported not working with newer BIOS.
Intel DP35DP	P35 / ICH9R	1333	105	Q9650, Q6600 (105 W)	ⓘ5xxx series Xeons not supported (3xxx unknown)
❌ Did not POST: E5450 ⚠️ Note: Only one report. Media Series model. Supports Intel Viiv Technology.
Intel DP43TF	P43 / ICH10	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450 (C0)
Intel DP45SG	P45 / ICH10R	1333	130	Q9650, QX9650	All
✅ Confirmed working: E5450, E5440 (E0), X5470 (E0) ⚠️ Note: Windows 8.1 64-bit install may fail without Xeon microcodes; adding them is difficult on Intel-branded boards.
Intel DQ35JOE	Q35	1333	105	Q9650, Q6700, E8600, E6850	ⓘLikely not compatible
❌ Did not POST: X3363 (E0)
Intel DX38BT	X38	1333	130	Q9650, QX9650, Q6700, E8600, E6850	ⓘPossibly incompatible with any LGA771 Xeons
❌ Did not POST: X3353
Intel S3200SH	Intel 3200/3210 / ICH9R	1333	130	X3370 (E0), QX9650, Q9550 (C1), Q6600 (all TDPs)	ⓘLikely not compatible
❌ Did not POST: E5440 ⚠️ Note: Server motherboard. Reports indicate 3xxx series Xeons may also not work.

J&W

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
J&W JW-P45D2-Ultra	P45 / ICH10R	1600	95	Possibly Q9650	ⓘPossibly all
✅ Confirmed working: E5410 (C0)

Jetway

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Jetway Xblue-P43-L	P43 / ICH10	1600	95 (possibly 135)	Q9650, QX9770 (per spec), Q6700 (Q6600 not listed)	All
✅ Confirmed working: L5420, E5205, E5110

Lenovo

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Lenovo M58e Type: 7307-PV4	G41	1333	95	At least Q9550 (C0 stepping)	All
✅ Confirmed working: E5450

MSI

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
MSI 945P Neo5	945P / ICH7	1333		Only older 65 nm Core 2 Duo supported	ⓘLikely incompatible
⏳ Not tested yet
MSI G31M (MS-7379 v2)	G31 / ICH7	1333	130	Q9650, QX9650	All
⏳ Not tested yet
MSI G31M3-L V2	G31 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450, E5430, E3113, E5205
MSI G31TM-P21 (MS-7529 v1.6)	G31 / ICH7	1333	120	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: X5470, E5450
MSI G31TM-P35	G31 / ICH7	1333	120	Q9650, Q6700, Q6600 (95 W only), E8600, E6850	All
✅ Confirmed working: X5460 (C0), E5420 (E0), E5430, E5450
MSI G41M-P23	G41 / ICH7	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450
MSI G41M-P25	G41 / ICH7	1333	120	Q9650, Q6700, Q6600 (G0 only), E8600, E6850	All
✅ Confirmed working: E5450 (C0), X5460
MSI G41M-P26	G41 / ICH7	1333	95	Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5462
MSI G41M-P33 Combo	G41 / ICH7	1333	120	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450, X5450
MSI G41M-P34 (MS-7592)	G41 / ICH7 / ICH7R	1333	95	Q9550 (C0); possibly: Q9650, Q6700, E8600, E6850	ⓘPossibly all
✅ Confirmed working: E5450 (C0) ⚠️ Note: No official CPU support list found; E0 stepping may be supported. May support 130 W TDP.
MSI MEDION MS-7502 (aka MS-7358)	G33	1333	130	QX9650, Q9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5450 (C0)
MSI MS-7525 (HP Boston)	G31	1333		Core 2 Duo E7xxx	ⓘDual-core only
❌ Did not POST: L5430 (quad-core) ⚠️ Note: Reports of BIOS issues preventing reliable use of 45 nm dual-core LGA775 CPUs.
MSI P35 Neo	P35 / ICH9	1333	130	Q9650, Q6700, E8600, E6850, QX9650	All
✅ Confirmed working: E5472
MSI P35 Neo2-FR	P35 / ICH9R	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470, E5420, L5420
MSI P35 Platinum	P35 / ICH9R	1600	136	Q9650, QX9770	All
✅ Confirmed working: E5450, X5460, X5450, L5420
MSI P41T-C31 (MS-7610, rev 1.0)	G41 / ICH7	1333	95	Q9650	All
✅ Confirmed working: E5430 (C0), X5460
MSI P43 Neo	P43 / ICH10	1600	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: E5472
MSI P43-C51	P43 / ICH10	1333	136	Q9650, QX9770	All
✅ Confirmed working: X5460 (C0), E5420, L5420
MSI P45 Neo	P45 / ICH10	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450 (C0)
MSI P45 Neo-F	P45 / ICH10	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450 (SLBBM)
MSI P45 Neo2	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450 (C0)
MSI P45 Platinum	P45 / ICH10R	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5450, X5460
MSI P45D3 Neo-F	P45 / ICH10	1600	135	Q9650, QX9770	All
✅ Confirmed working: E5462
MSI P6N Diamond	nForce 680i SLI / 570i SLI MCP	1333	130	QX6800, Q6700, E6850	ⓘAll 65 nm
⏳ Not tested yet
MSI P6N SLI	nForce 650i SLI / 430i	1333	130	Q6700, QX6850, E8600, E6850	ⓘAll 65 nm CPUs; 45 nm dual-core only
❌ Did not POST: E5450 (C0) ⚠️ Note: One report says a 45 nm E5450 was unstable; extensive tweaking did not help.
MSI P6N SLI Platinum	nForce 650i SLI	1333	130	Q6700, Q6600 (all steppings), QX6850	ⓘOfficially all 65 nm quads; 45 nm quads not official, but X5460 reported working
✅ Confirmed working: X5460 (C0), E5345 (SLAEJ)
MSI P7N Diamond	nForce 780i SLI / 570i SLI	1333	136	Q9650, QX9770, Q6700, E8600, E6850	All
✅ Confirmed working: E5470

Pegatron

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Pegatron IPIEL-LA3	G43	1333	120	Q9650	ⓘMay be unstable
✅ Confirmed working: X5470 ❌ Did not POST: E5450 (E0; rev 1.02 board) ⚠️ Note: Used in HP Slimline s5280t. Two users reported the system ran extremely slowly.
Pegatron IPM41-D3	G41 / ICH7	1333	95	Q9650, Q6600, E8600	All
⏳ Not tested yet
Pegatron IPMEL-PRC	G41 / ICH7	1333	95	Possibly Q9650	ⓘPossibly all
✅ Confirmed working: E5405

Shuttle

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Shuttle SG33G5	G33 / ICH9DH	1333	95	Q9650	ⓘPossibly all
⏳ Not tested yet
Shuttle SP35P2 (FP35 motherboard)	P35 / ICH9R	1333	130	Q9650, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5430, L5420
Shuttle XPC SG41J4	G41 / ICH7	1333	95	Q9650, E8600, E6850 (65 nm quad-core Q6700 not supported)	ⓘPossibly all 45 nm (dual and quad) and 65 nm (dual-core only) Xeons
⏳ Not tested yet

Supermicro

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Supermicro X7SBE	Intel 3210 / ICH9R	1333	95	Q9650	ⓘPossibly all 3xxx series Xeons are supported
✅ Confirmed working: X3363 (C0) ❌ Did not POST: X5450 (E0), E5450 (C0) ⚠️ Note: Reports indicate no overclocking possible, but stable at stock. Unable to update microcode (even with Phoenix BIOS). CPU-Z may report incorrect CPU info (voltage, etc.).

XFX

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
XFX 680i LT	nForce 680i LT SLI	1333	130	Q6700, QX6850	ⓘ65 nm quads (official); reports that 45 nm quads also work
✅ Confirmed working: E5450, X5460, X5450 (C0) ⚠️ Note: One user reported X5450 (C0) would not boot until flashing the P08 BIOS.
XFX 780i	nForce 780i	1333	120	Possibly Q9650, possibly QX9650	ⓘPossibly all
✅ Confirmed working: X5460
XFX 790i	nForce 790i Ultra	1600	136	Q9650, QX9770	All
✅ Confirmed working: X5470 (E0), E5450 (E0), E5440
XFX 9300	GeForce 9300	1333	95	Q9650, Q6600 (95 W only)	All
✅ Confirmed working: L5420
XFX nForce 750i	nForce 750i	1333	130	Q9650, Q9550S, QX9650, Q6700, E8600, E6850	All
✅ Confirmed working: E5410, E5405

Zotac

Motherboard	Chipset	Max FSB (stock)	Max TDP (W)	Supported LGA775 CPUs	Xeon compatibility (within FSB & TDP)
Zotac 620i (MCP73)	nForce 620i	1333	120	Q9650	All
✅ Confirmed working: X5460
Zotac G43ITX-A-E	G43 / ICH10	1333	65	Q9550S	All
✅ Confirmed working: L5420 (E0, C0)
Zotac GF9300-ITX	GeForce 9300	1333	95	Q9650, Q6700, Q6600 (G0 only)	All
✅ Confirmed working: E5450, E5440