See the What's New page for a complete list of changes.īased on the well-known original memtest86 written by Chris Brady, memtest86+ is a port by some members of the x86-secret team, now working at Our goal is to provide an up-to-date and completly reliable version of this software tool aimed at memory failures detection.
Support for network PXE boot for scalable, diskless deployment to multiple targets.
Addition of 2 new memory tests to take advantage of 64bit data and SIMD instructions.
This is the result more moving to native 64bit code, removing the PAE paging hack, switching compilers and using faster random number generation algorithms.
Speed improvements of between 10% and 30%+.
Having a configuration file to allow settings to be pre-defined without the need for keyboard input.
Option to disable CPU caching for all tests.
This includes DDR4 RAM that support Intel XMP 2.0 DDR4 RAM timings
Support for DDR4 RAM (and associated hardware), including retrieval and reporting of DDR4-specific SPD details.
Injection of ECC errors for test purposes.
Detection of ECC support in both the RAM and memory controller.
ECC RAM support (limited hardware support, ongoing development).
In all prior MemTest86 releases, there was no disk support.
Support to writing to the USB drive that MemTest86 is running from for logging and report generation.
Timings, clock speeds, vendor names and much more.
Reporting of detailed RAM SPD information.
Improved multi-threading support, where supported by the underlying UEFI system.
The keyboard now works on systems that fail to emulate IO Port 64/60 correctly. On older systems a keyboard is still required.
Mouse support, where supported by the underlying UEFI system.
No longer requires the use of the PAE workaround to access more than 4GB of memory.
When booting from UEFI, MemTest86 has access to additional services not available in BIOS including: MemTest86 supports booting from the newer UEFI platform.
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