Machinist X99-PR9

Machinist X99-PR9 motherboard — overview

The Machinist X99‑PR9 is a solid entry‑level motherboard for LGA2011‑3 that stands out thanks to its surprisingly decent stock firmware and reliable build quality for the price.

There are several similar boards from the same manufacturer: Machinist X99‑PR8 (DDR3 version with limited CPU compatibility) and Machinist X99‑PR9‑H (simplified model based on the HM55 chipset).

Specifications

ModelX99-PR9
SocketLGA 2011-3
ChipsetB85 / Q87 / Z97 / C222
Supported ProcessorsIntel Core i7 (5000, 6000 series, Haswell-E/Broadwell-E)
Intel Xeon E5-1600 v3/v4, E5-2600 v3/v4, E5-4600 v3/v4 (Haswell-EP/Broadwell-EP)
VRM Configuration3 phase (6 virtual via doublers)
Total MOSFETs: 12 (6 high-side + 6 low-side)
Maximum Recommended TDP≤110W (v3 processors)
≤120W (v4 processors)
Supported Memory4 x DDR4 DIMM (dual-channel) with ECC and non-ECC support
Maximum capacity: 128 GB
Sleep Mode SupportNo
Expansion Slots1 x PCI-e x16 (Gen 3.0)
1 x PCI-e x1 (Gen 2.0)
Storage3 x SATA 3.0
1 x M.2 (NVME/NGFF, Gen 3.0 x4)
Fan Connectors1 x CPU cooler (4pin)
1 x case fans (4pin)
PS/2 Ports2 (mouse + keyboard)
USB 3.0 Ports2 (+ front panel support)
USB 2.0 Ports6 (+ front panel support)
NetworkGigabit LAN (RTL8111 \ RTL8168)
Audio5.1 channel (ALC897)
TPM 2.0 headerNo
Form Factor & DimensionsmATX 215 x 185 mm
Approximate Price$30 - $45 (Aliexpress)

The board is based on desktop chipsets B85, Q87, or Z97, and some samples use the server‑grade C222. Regardless of the PCH installed, overall functionality is the same.

Like most budget boards, the X99‑PR9 uses a power stage with three doubled phases (3×2), two MOSFETs per phase. It employs SM4377NHKP (50 A / 7 mΩ) and SM4522NHKP (110 A / 2.65 mΩ) MOSFETs, uP1961S (×3) drivers, and a uP1649Q controller. This setup handles entry‑ and mid‑range CPUs without issues. Higher‑TDP models (~120 W+) are possible, but we recommend extra airflow across the VRM in those cases.

There’s a 2‑pin fan header next to the VRM heatsink where you can attach a small blower — handy for adding localized cooling.

Storage consists of three SATA 6 Gb/s (SATA III) ports and one M.2 slot. The M.2 slot supports both NVMe (default) and SATA modes — switching between them requires adjusting the jumpers shown in the image below.

Machinist X99-PR9 — M.2 slot NVMe/SATA jumper configuration

Otherwise, this model doesn’t stand out much among similar budget boards. It also inherits most of the traditional drawbacks:

Common Limitations of Budget Chinese X99 Motherboards:
Temperature Monitoring Issues

Temperature monitoring doesn’t work properly on most budget Chinese X99 boards. Onboard sensors are non-functional and display erratic readings (such as 120°C+ in monitoring software like AIDA64) due to faulty sensor implementation. However, CPU temperature monitoring via the processor’s built-in sensors remains accurate.

Limited Fan Control

Fan control only works with 4-pin PWM CPU coolers. 3-pin case fans run at constant speeds without automatic regulation. Consider using manual fan controllers or PWM adapters as workarounds.

BIOS Limitations

The BIOS implementation is often incomplete. You’ll find numerous settings and options, but many simply don’t function as intended or have no actual effect on system behavior.

Most critically, memory timing controls are hidden in the stock BIOS. This prevents manual RAM overclocking and fine-tuning. However, you can solve this by flashing modified BIOS versions that unlock these hidden advanced memory timing options and other concealed features.

AIDA64 Freezing

Chinese boards with desktop chipsets (H81, B85, Q87, etc.) have broken motherboard temperature sensors that freeze AIDA64.

Fix: Disable the faulty sensor in AIDA64

  • Enable status bar: View → Status Bar
  • Right-click the status bar at the bottom → HWMon Modules → uncheck PCH / Bibxy
  • If this doesn’t help – disable all sensors and enable them one by one to identify the culprit.

BIOS Capabilities

Machinist X99-PR9 — BIOS interface (AMIBIOS)

The stock firmware is this model’s strong point. The BIOS is based on American Megatrends code and looks similar to other Chinese boards, but it includes almost everything you need: from DRAM timing controls to Resizable BAR (ReBAR) support. There’s even separate control for the second 4‑pin fan header. About the only feature you might add is Turbo Boost Unlock (TBU) for V3 Xeons; if you’re using V4 CPUs, there’s little reason to change the firmware at all.

ChipsetBIOS version & dateRam TimingsReBARUnlocked CPU OCTurbo Boost unlockUndervoltNotes & Link
B85 / Q87 / Z9710/10/2023 Ver: X99HA00Q++---Stock BIOS
[Download]
B85 / Q87 / Z9710/10/2023 Ver: X99HA00Q++-+-50 mVStock BIOS + TBU
[Download]
⚠️ WARNING: BIOS flashing carries real risks and can permanently damage your motherboard if the firmware is incompatible or the process fails. We cannot guarantee compatibility with every board revision or hardware configuration. Failed flashes typically require a hardware programmer for recovery. Make sure you understand the risks before proceeding.

Simple BIOS Flashing Guide (Windows)

  1. Download FPTW 9.1.10 from this page.
  2. Open Command Prompt as Administrator.
  3. Copy your BIOS file (bios.bin or bios.rom) into the same folder as FPTW.
  4. In the Command Prompt, navigate to the FPTW folder using the cd command.
  5. Flash the BIOS with the following command: fptw64 -f bios.bin

Note: Replace bios.bin with the actual name of your modded BIOS file, if it’s different.

After flashing, reset settings to defaults (Clear CMOS) before first boot.

Frequently Asked Questions

The board won’t boot, black screen, etc. What should I do?

See our article about the most common LGA2011‑3 issues.

Where can I find drivers for this board?

The page with current drivers for socket 2011‑3 boards is located here.

Is there a manual available, maybe a PDF?

The official Machinist manual can be downloaded here.

How do I connect the front panel?

Front panel connectors pinout

Conclusion

The Machinist X99‑PR9 offers a sensible balance for budget‑conscious builders who need baseline functionality without major compromises. It won’t win awards for innovation, but the mix of a decent stock BIOS, adequate power delivery, and reasonable build quality makes it a reliable choice for entry‑level LGA2011‑3 builds.

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