Memtest86

MemTest86 and Memtest86+ are memory test software programs designed to test and stress test an x86 architecture computer's random-access memory (RAM) for errors, by writing test patterns to most memory addresses, reading back the data, and comparing for errors. Each tries to verify that the RAM will accept and correctly retain arbitrary patterns of data written to it, that there are no errors where different bits of memory interact, and that there are no conflicts between memory addresses.

MemTest86
Developer(s)PassMark Software
Initial release1994 (1994)
Stable release
10.7 (Build 1000)  / 8 February 2024
Written inC and assembly
TypeUtility
Licensefreeware, proprietary license
Websitewww.memtest86.com 
Memtest86+
Developer(s)Martin Whitaker, Sam Demeulemeester
Initial releaseearly 2004 (2004)
Stable release
7.00  / 7 January 2024
Repositorygithub.com/memtest86plus/memtest86plus
Written inC and assembly
TypeUtility
LicenseGNU General Public License, version 2.0
Websitehttps://www.memtest.org/
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