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Release Notes - Memtest86 5.00 Free Edition

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Memtest86 5.00 Free Edition

Version 5.0 release for UEFI 3/Dec/2013

  • Completely re-written to work under UEFI.
  • Native 64-bit support
  • No longer requires the use of the PAE workaround to access more than 4GB of memory. (PAE = Physical Address Extension)
  • Mouse support, where supported by the underlying UEFI system. On older systems a keyboard is still required.
  • Improved USB keyboard support. The keyboard now works on systems that fail to emulate IO Port 64/60 correctly. So Mac USB keyboards are now supported.
  • Improved multi-threading support, where supported by the underlying UEFI system.
  • Dual boot with Memtest version 4 for supporting older systems without UEFI. So with a single USB or CD drive both UEFI systems and BIOS systems can be supported.
  • Reporting of detailed RAM SPD information. Timings, clock speeds, vendor names and much more.
  • Support to writing to the USB drive that Memtest is running from for logging and report generation. In all prior MemTest releases there was no disk support.
  • Use of GPT. (GUID Partition Table)
  • ECC RAM support (limited hardware support, ongoing development)
    • Detection of ECC support in both the RAM and memory controller
    • Polling for ECC errors
    • Injection of ECC errors for test purposes. (limited hardware only)
  • Option to disable CPU caching for all tests
  • Support for reading parameters from a configuration file to allow settings to be predefined without the need for keyboard input. This can help with automation.
  • Support for Secure Boot
  • Speed improvements of between 10% and 30%+. Especially for tests, #5, #8 & #9. This is the result more moving to native 64bit code, removing the PAE paging hack, switching compilers and using faster random number generation algorithms.
  • Addition of 2 new memory tests to take advantage of 64bit data and SIMD instructions.

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