Memtest86+ is a comprehensive, stand-alone memory diagnostic. Memtest86+ is software designed to stress test an x86-compatible computer’s random access memory (RAM) for errors.
It tries to verify that the RAM will accept and correctly retain arbitrary patterns of data written to it.
Memtest86+ is designed to run from a bootable floppy disk, CD-ROM, USB Drive, or from a suitable bootloader without an operating system present.
Memtest86+’s tests are comprehensive so it can find otherwise hidden problems on machines that appear to work normally. With many chipsets, Memtest86+ allows counting of failures even in error-correcting ECC DRAM.
Memtest86+ writes a series of test patterns to every memory address, reads back the data written, and compares it for errors. Information about the chipset can be used to enhance these tests – particularly in an overclocked system.
Many chipsets can report RAM speeds and timings, and some even support changing the memory timings on the fly; in this way, Memtest86+ can test that memory remains error-free with the more aggressive settings.
Memtest86 was originally developed by Chris Brady; Memtest86+ is developed by Samuel Demeulemeester.
Enhancements in Memtest86+ 5.01:
- Added support for up to 2 TB of RAM on X64 CPUs
- Added experimental SMT support up to 32 cores (Press F2 to enable at startup)
- Added complete detection for memory controllers
- Added Motherboard Manufacturer & Model reporting
- Added CPU temperature reporting
- Added enhanced Fail Safe Mode (Press F1 at startup)
- Added support for Intel “Sandy Bridge-E” CPUs
- Added support for Intel “Ivy Bridge” CPUs
- Added preliminary support for Intel “Haswell” CPUs (Core 4th Gen)
- Added preliminary support for Intel “Haswell-ULT” CPUs
- Added support for AMD “Kabini” (K16) CPUs
- Added support for AMD “Bulldozer” CPUs
- Added support for AMD “Trinity” CPUs
- Added support for AMD E-/C-/G-/Z- “Bobcat” CPUs
- Added support for Intel Atom “Pineview” CPUs
- Added support for Intel Atom “Cedar Trail” CPUs
- Added SPD detection on most AMD Chipsets
- Enforced Coreboot support
- Optimized run time for faster memory error detection
- Rewriten lots of memory timings detection cod
- Corrected bugs, bugs and more bugs (some could remain)
Homepage – http://www.memtest.org