Why You Want It

The standard for memory diagnostics


  • Boots from a USB flash drive to test the RAM in your computer for faults.
  • Utilizing algorithms that have been in development for over 20 years.


What is MemTest86


MemTest86 is the original, free, stand alone memory testing software for x86 and ARM computers.


MemTest86 boots from a USB flash drive and tests the RAM in your computer for faults using a series of comprehensive algorithms and test patterns.

Learn More >


Why test your ram?


Unreliable RAM can cause a multitude of problems. Corrupted data, crashes and unexplained behaviour.


Bad RAM is one of the most frustrating computer problems to have as symptoms are often random and hard to pin down. MemTest86 can help diagnose faulty RAM (or rule it out as a cause of system instability). As such it is often used by system builders, PC repair stores, overlockers & PC manufacturers.

Learn More >




  • UEFI
    The new graphical standard for BIOS
  • Network (PXE) boot
    Scalable, disk-less provisioning from a PXE server
  • Reports / Logs
    Save results to disk
  • Error address decode
    for DIMM / chip errors
  • Self-booting USB
    No O/S required
  • All RAM types supported
    DDR2 / DDR3 / DDR4 / DDR5 / SODIMM / XMP / ECC
  • Foreign language support
    Chinese, German, Russian, Japanese & more
  • x86 and ARM CPU support
    x86 (32/64-bit) or ARM64 based hardware
  • Graphical interface
    and mouse support
  • 13 algorithms
    Including SIMD and row hammer tests
  • Secure boot signed
    Code integrity verified by Microsoft
  • Bulk testing automation
    For production line environments




Free, Professional or Site Edition


Since MemTest86 v5, the software is offered as a Free edition, or as a paid for Pro and Site edition. The Pro edition offers a number of additional features such as customizable reports & automation via a configuration file. The Site edition includes all features in the Pro Edition but also supports scalable deployment of MemTest86 across LAN via PXE boot.

Learn More >