Memory testing program for PC - 13 different RAM testing algorithms!

Memtest86

Memtest86 8.1

  -  8.54 MB  -  Freeware
  • Latest Version

    Memtest86 11.1

  • Operating System

    Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

  • User Rating

    Click to vote
  • Author / Product

    PassMark Software / External Link

  • Filename

    memtest86-usb.zip

  • MD5 Checksum

    a66c56e1e1c169a88cc77d8afd5ae139

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Memtest86 8.1.


For those interested in downloading the most recent release of Memtest86 or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

  • Memtest86 8.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Memtest86 8.1 Screenshot 1
  • Memtest86 8.1 Screenshot 2
  • Memtest86 8.1 Screenshot 3
  • Memtest86 8.1 Screenshot 4
  • Memtest86 8.1 Screenshot 5

What's new in this version:

- Added version information and total CPU threads to test summary screen
- Increased maximum number of CPU threads to 256
- Added text colour to error messages during testing
- Added Mac Mini 2018 to blacklist which sets the lower address limit to 0x1000 by default
- Fixed bug in detection of hyperthreads when the number of CPU threads exceeds the maximum
- Fixed incorrect JEDEC manufacture names (Bank 10)
- Fixed missing RAM part number / serial number obtained from SMBIOS in HTML report
- Fixed incorrect channel/slot number for ECC errors on Skylake-SP chipsets
- Fixed bug in specifying the number of test passes for Free version