I overclocked my system for fun and for ram you'd run 2-3 different tests to be able to call it stable with some confidence, as they all have different access patterns and r/w ratios.
Memtest86/+ are usually seen as worse compared to the other tests like say or karhu ram test or testme5, but those also need an OS to run and in the rare chance only some region of memory is faulty could miss it
I tried to explain the relationship here, when the previous major release appeared:
https://www.theregister.com/2024/01/11/memtest86_70_released...
Passmark bought MemTest86 after MemTest86+ was forked. It does offer a freeware version but it's limited.
Since the UEFI-capable MemTest86+ came out a few years ago, there have been multiple new releases and it seems to be advancing quite significantly. PassMark seems to have given up trying to keep up.
neilv•2mo ago
I use it on random machines as one of the burn-in tests of hardware. Not only of RAM, but it also lightly exercises CPU, and helps test cooling.
Early on, I used it on a bootable CD-ROM. In recent years, I've been putting it in the Grub boot menu (on systems not afflicted with UEFI).
voxadam•2mo ago
Modern Memtest86+, versions 6 and higher, support systems that boot using UEFI.
neilv•2mo ago