By skyforbes It is also able to access almost all the computer's memory, not being restricted by the memory used by the operating system and not depending on any underlying software like UEFI libraries.
Memtest86+ can be loaded and run either directly by a PC BIOS (legacy or UEFI) or via an intermediate bootloader that supports the Linux 16-bit, 32-bit, 64-bit, or EFI handover boot protocol. It should work on most x86, x86-64 CPU (Pentium class or later 32-bit or 64-bit) and most LoongArch64 CPU (Loongson 3 and Loongson 2 family).
Complete changelog:
This release include some significant internal updates, adds CLang/LLD support, and now ships as a single binary for both UEFI and legacy boot.
- Add support for latest Intel CPUs
- Add support for latest AMD CPUs
- Faster detection for many-cores CPUs
- Added Temperature reporting on DDR5
- Added optional Dark Mode
- Fix DDR5 XMP 3.0 issue
- Better BadRAM support and reporting
- Better SPD detection on early ICHs
- Better support for VTxxx serial console
- Various refinements for Loongson µarch
- Bug fixes & optimizations
Source: https://github.com/memtest86plus/memtest86plus
Binary releases (both stable and nightly dev builds) are available on: https://memtest.org/
Note: "Memtest86+ is not an edition of Memtest86, which since 2013 has been closed-source `Freemium` software owned by PassMark Software Pty Ltd. "
If you need a bit more advanced by PassMark: https://www.memtest86.com/download.htm