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The Site edition includes all features in the Pro Edition but also supports scalable deployment of MemTest86 across LAN via PXE boot. The Pro edition offers a number of additional features such as customizable reports and automation via a configuration file. Since MemTest86 v5, the software is offered as a Free edition, or as a paid for Pro and Site edition. (So there is no need for a future product called MemTest64). This covers both 32-bit and 64-bit machines. The number 86 following the MemTest part of the name, refers to the original x86 CPU instruction set that all of today’s PCs use. As such it is often used by system builders, PC repair stores, overclockers and PC manufacturers. MemTest86 can help diagnose faulty RAM (or rule it out as a cause of system instability). Bad RAM is one of the most frustrating computer problems to have as symptoms are often random and hard to pin down. Corrupted data, crashes and unexplained behaviour. Unreliable RAM can cause a multitude of problems. Network (PXE) boot – Scalable, disk-less provisioning from a single PXE server.Self booting off USB, without needing DOS, Linux nor Windows.Foreign language support (Chinese, German and more).Graphical interface, mouse support and logging of results to disk.Secure boot – With MemTest86 being code signed by Microsoft.ECC RAM – support for error-correcting code RAM.64bit – From version 5, MemTest86 is native 64bit code.

Using the information about the chipset you can enhance these tests – particularly in an overclocked system. Memtest86 writes a series of test patterns to every memory address, reads back the data written, and compares it for errors. It tries to verify that the RAM will accept and correctly retain arbitrary patterns of data written to it. MemTest86 boots from a USB flash drive and tests the RAM in your computer for faults using a series of comprehensive algorithms and test patterns. Memtest86 by PassMark is a comprehensive, free, stand alone memory diagnostic software It is designed to stress test an x86 compatible computer’s random access memory (RAM) for errors.