Mit PassMarks MemTest86 lässt sich mit Hilfe eines ISO-Images ein bootbarer USB-Stick erstellen, mit dem der Arbeitsspeicher von Windows‑, Linux- oder Mac-Systemen auf UEFI-Basis einem Test unterzogen werden kann.
MemTest86 ist einer kostenlosen sowie einer kostenpflichtigen Pro-Version erhältlich. Es ist nicht zu verwechseln mit Memtest86+ — welches seit 2013 nicht mehr weiterentwickelt wird — oder MemTest, das unter Windows ausgeführt werden kann.
Version 9.0 10/Feb/2021
New Features
Support UEFI-based ARM systems (arm64/aarch64), including memory test algorithms ported to ARM64 and optimized using hand-written assembly code. Special thanks to Simula eX³ project (ex3.simula.no) for providing high-end ARM64 systems for testing.
Added BADRAM& badmemorylist formatted strings and instructions in the exported HTML report to mask defective memory addresses (Pro only)
Revamped RAMSPD screen in the Main Menu with graphical view of all RAM slots
Added preliminary support for DIMM temperature reporting (when supported by DIMM)
Added option to change save location of logs/reports to another disk volume (file system)
Added prompt on various exit options (shutdown, reboot, exit to BIOS) on application exit.
Added keyboard shortcut (F12) to save screenshot to file within the Main Menu
Support for saving test results to a byte-packed, binary file for storage-limited systems
Support for passing configuration parameters via command line arguments
Added new config file parameter, ‘EXACTSPDSIZE’, to specify the total capacity of all detected SPD to match before allowing tests to begin
Added new config file parameter, ‘MEMREMMB’, for specifying the minimum amount of memory to leave unallocated during testing
Added new config file parameter, ‘MINMEMRANGEMB’, for specifying the minimum size of memory ranges that shall be allocated for testing
Added new config file parameter, ‘AUTOREPORTFMT’, for specifying report format of auto-saved reports
Added new config file parameter, ‘PMPDISABLE’, to disable TFTP uploading of XML messages for Management Console integration
Added new config file parameter, ‘RTCSYNC’, to sync real-time clock with PXE server (via a periodically updated ‘CurrentTime.txt’ served by the PXE server)
Added new config file parameter, ‘VERBOSITY’, for specifying the verbosity level of the debug output
Added new config file parameter, ‘TPL’, to specify the UEFI task priority level of the MemTest86 application
Fixes/Enhancements
Support for per-baseboard configuration file via baseboard-prefixed filename (eg. “Surface Pro-mt86.cfg”)
Optimized/removed stale 32-bit code in memory tests
Improved test coverage by alternating between ascending/descending assignment order of CPU cores between passes when running in parallel mode
Track CPU core/thread ID of detected memory errors, and include the list of CPUs in error in test summary/report
Added tracking and reporting of min/max/average CPU + DIMM temperatures (when supported by DIMM)
Added SMBIOS memory device info to reports
Modified DRAM address ECC error reporting from (Column,Row,Rank,Bank) -> (Channel,Slot,Rank,Bank,Row,Column)
Added serial number of DIMM module experiencing ECC errors in report (supported chipsets only)
Added channel/slot information of detected SPDs in report (supported chipsets only)
Fixed 100% CPU usage when waiting for input in main menu
Improved UI drawing performance for better responsiveness
Generate beeps of Piezo Speaker on test end (if available)
Changed to large, coloured PASS/FAIL message box on test end
Changed to large, coloured FAIL message box on failed pre-test SPD checks
Fixed Test 12 errors in HTML report being truncated
Updated blacklist to work around new UEFI bugs Apple added to their UEFI firmware
Updated blacklist to work around Microsoft/Huawei laptops with display issues related to screen resolution
Fixed crash on VirtualBox due to reading of non-existent MSRs
Include system information details in TestResult XML messages to PXE Server (Site Edition)
Display error when there is a TFTP transfer error when sending Status XML messages to PXE server (Site Edition)
Fixed escaping of chars to XML entities when generating messages to PXE Server (Site Edition)
Output additional lines to console during MemTest86 boot
Fixed detection of uncorrected ECC errors for AMD Ryzen chipsets
Fixed ECC detection for > 2 channels for AMD Ryzen chipsets
Fixed ECC support for multiple CPU dies for AMD Ryzen chipsets
Fixed ECC error detection on AMD Ryzen chipsets with multiple CPUs
Added preliminary support for AMD Ryzen ECC reporting via error count registers when PFEH is enabled
Fixed ECC detection for Intel chipsets that use error count registers
Added ECC support for different Intel Coffee Lake chipset variants
Added disabling of SMI for Intel Kaby Lake chipsets to allow ECC errors to be detected
Added ECC support for Intel Comet Lake chipsets
Added preliminary support for decoding of system address to socket/channel/rank/bank/row/column address on Broadwell-DE. This information is logged in the log file.
Fixed incorrect reporting of ECC capabilities for chipsets with multiple IMCs
Added support for retrieving CPU info for Intel Gemini Lake chipsets
Added preliminary support for retrieving CPU info for Intel Ice Lake chipsets
Fixed potential unstable behaviour when increasing the target multiplier for Intel Silvermont chipsets
Fixed enabling turbo mode on Intel Silvermont chipsets
Updated temperature offsets for AMD Ryzen chipsets
