my ram (2 x 16G sticks) failed memtest86 spectacularly several months ago. You'd wonder how it could even POST. I ran it after a few suspicious events (mainly GIMP/Fedora crashes, but I suspect they may be GPU errors for reasons -- also GIMP doesn't crash in Windows, though I rarely use it). It's in dual-channel mode with no way to disable that in BIOS, and sticks were purchased separately several months apart in 2018 (same model number and specs, but a HyperX tech said they didn't match, and wouldn't work in dual channel).
I have continued using them with no discernible difference in stability or performance following this discovery. Maybe this test means less than one might suppose.
EDITED: 15 Feb 11:12 by DSMITHHFX