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Download Editors' Rating:
Editors' Rating:
Average User Rating:
out of 17 votes out of 2 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Feb. 23, 2015
  • Price:
    Free; paid upgrade available
  • File Size:
  • Downloads Last Week:
  • Platform:
  • Product ranking:

Editors' Review


This freeware accurately checks the memory of x86 computers, but Memtest86's floppy-boot-disk installation lessens its mass appeal.

This utility won't install to your hard drive; it can only install on a bootable floppy disk. There is no interface, as it immediately checks your computer's memory. Memtest86 is quick and accurate. However, system administrators looking for a memory tester will probably pass on Memtest86, as many current machines don't include floppy drives.

Home users with older PCs will appreciate the simplicity of Memtest86. It can't get any easier than inserting a disk and rebooting your PC. We can easily recommend this freeware for home users who have floppy drives and a need to check their computer's memory.

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Publisher's Description

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User Reviews

Results 1–2 of 2

5 stars

"Excellent tool"

May 16, 2015  |  By caffeinegeek

2015-05-16 16:22:51  |  By caffeinegeek

 |  Version: Memtest86 6.0


Excellent utility for testing for RAM errors. The test suite is very thorough and will catch all sorts of issues that can arise when physical RAM shows anomalies.


None that I have encountered.


Don't let the low ratings fool you. Those that gave 1 star reviews are simply not technical enough to use the software correctly. Burn it to an optical disc or build a bootable USB drive to use Memtest86. As the Editor's review states, do not simply decompress and run in Windows (or OSX or *nix).

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5 stars

"The industry standard memory test"

February 24, 2015  |  By Mukunda_Yuyutsu

2015-02-24 14:53:46  |  By Mukunda_Yuyutsu

 |  Version: Memtest86 6.0


Does a deep test on your RAM sticks. Version 6.0 supports the newer memory technologies. Such as DDR4, 64bit and the UEFI graphical BIOS's found on new PCs. You can now also get a test report written out to your USB drive at the end of testing. Software is free.


This isn't software that runs in Windows like some of the old reviewers seemed to think. It boots from a USB drive (or a CD) that you need to prepare following the instructions in the download.
It can also be slow to run, it can take an hour or more. I run it overnight.
Support for traditional BIOS and floppy disk has been dropped in the latest release. but does anyone use a floppy disk anymore?


Free, effective RAM test for your PC.

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Results 1–2 of 2

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Full Specifications

What's new in version 6.0
Version 6.0:
  • UEFI BIOS support, including secure boot.
  • DDR4 support, including XMP
  • Row hammer testing
  • 64bit native code
  • Foreign language support, French German, Japanese, Chinese
  • ECC RAM support for server class CPUs
  • Writing of test reports to the USB drive
Publisher PassMark Software
Publisher web site
Release Date February 15, 2015
Date Added February 23, 2015
Version 6.0
Category Utilities & Operating Systems
Subcategory Diagnostic Software
Operating Systems
Operating Systems Windows 98/Me/NT/2000/XP/2003/Vista/Server 2008/7/8
Additional Requirements USB flash drive
Download Information
File Size 5.53MB
File Name
Total Downloads 275,962
Downloads Last Week 150
License Model Free
Limitations Not available
Price Free

Previous Versions:

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