Memtest86

by PassMark Software

A free memory testing program that boots from a USB drive to find errors and defects in the RAM of a PC.

Operating system: Windows

Publisher: PassMark Software

Release: Memtest86 11.7

Antivirus check: VirusTotal report

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Are you planning to use your new PC? How about checking the RAM before getting to work? Memtest86 is designed to diagnose errors by using a series of complex algorithms and test patterns. This advanced tool detects memory faults that simple BIOS-based memory tests often fail to locate. You boot the software for RAM diagnosis from a USB flash drive, without starting Windows or any other operating system.

It is a stand-alone solution that thoroughly checks the integrity of a computer's memory on x86, x86-64 and ARM64 systems. The software's built-in algorithms have been developed since 1994, ensuring the effectiveness of memory checks. You'll run a series of test passes to check if there is any defect that can interrupt your PC's smooth functionality.

Memtest86 helps you find faulty RAM behind freezes, crashes and instability by testing the memory outside the operating system.

Features:

  • The software works after booting up from the USB drive.
  • It uses 14 test algorithms, including address, moving inversion, row hammer and DMA tests, to detect RAM defects of your PC.
  • Different types of RAM, such as DDR2, DDR3, DDR4, DDR5, LPDDR, ECC and CAMM2 modules, are compatible with this tool.
  • Memtest86 is optimized to function on UEFI-based x86 or ARM64 systems.
  • Customized test settings (tests, address range, CPUs and number of passes) allow detailed and effective checks.
  • The software shows system and SPD information and logs all detected errors in a report.
  • A built-in RAM benchmark measures memory speed per block size and can export the results as HTML.

If you encounter issues running your PC smoothly, faulty memory is one of the possible causes. Memtest86 helps you identify errors for personal or industrial usage. It comes with three editions: Free, Pro, and Site Edition. The paid editions add features such as customizable reports and automation, and the Site Edition adds network (PXE) boot. Memtest86 is a handy solution for PC repair stores, system builders, PC manufacturers, or overclockers.

It was developed by Chris Brady in 1994, and PassMark Software took it over in 2013. The free version enables an easy download and use of the program by booting up with a USB drive. However, to unlock the additional features of the Pro and Site editions, you must pay a license fee.

x86, x86-64 or ARM64 PC with UEFI firmware
USB flash drive larger than 1 GB
Windows, Linux or macOS to create the USB drive
Legacy BIOS PCs need the older V4 release

PROS
Effective for diagnosing and troubleshooting memory issues.
Runs without an OS, independent of Windows.
Contains user-friendly graphical user interface.

CONS
Doesn't repair or fix the detected memory errors.
Might be complex for less tech-savvy users.
Only tests RAM, not other components.
Memtest86 10.7 (11.37 MB)
Memtest86 11.7 (12.13 MB)
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