TestMem5 (TM5) is a compact yet highly effective tool for stress-testing system memory. It’s especially popular among overclocking enthusiasts, as it can detect even minor stability issues that standard benchmarks often miss.
The program doesn’t require installation — just extract the archive and run the executable. It works on Windows and loads your RAM with a variety of test patterns designed to reveal hidden instabilities.
One of TestMem5’s key strengths is its support for custom configuration files (CFG presets). This allows users to select different testing profiles, ranging from light to extreme. Some of the most well-known presets include anta777 Extreme, Absolut, and others.
Key features:
- Tests RAM stability under overclocked settings.
- Detects memory or memory controller errors.
- Fully configurable through external CFG files.
- Logs errors automatically and shows test progress in real time.
How to use
- Download and extract the program.
- Run it as administrator.
- Load your preferred configuration file (e.g. Extreme).
- Start testing and let it complete several cycles.
- If no errors appear — your memory is stable. If errors do occur, try lowering frequency, loosening timings, or checking individual modules.
TestMem5 remains one of the most accurate and lightweight RAM testing tools available, making it an essential utility for memory tuning and overclocking with DDR3, DDR4, or DDR5 systems.
Download
The original version was created by Serj (version 0.12) but was later abandoned. The actively used and improved version 0.13 maintained by CoolCmd fixes various bugs and enhances overall usability. Official GitHub page.
⚠️ Antivirus warning:
Some antivirus programs — including Windows Defender — may falsely flag TestMem5 as malware.
This is a false positive: the detection occurs because the program is written in Assembly,
which can trigger heuristic scanners that misinterpret low-level code behavior.
📥 TestMem v0.12
📥 TestMem v0.13.1
Version 0.13 already includes configuration files by default.
If you encounter an AWE error (even when running as administrator), simply restart your computer and launch the program again.
