> manufacturers don't offer ECC memory modules with a speed as high as non-ECC versions. Indeed, they seem to be aiming their ECC sticks at the server market,

> manufacturers don't offer ECC memory modules with a speed as high as non-ECC versions. Indeed, they seem to be aiming their ECC sticks at the server market, their "overclockable" sticks at the gamer market, and not mixing the two. Perhaps this would change if more workstation motherboards officially supported ECC. In the meantime, I suspect today's ECC RAM and X3D cache CPUs might complement each other well. > For Zen 4 at least there's DDR5 with its on-die ECC, but the path to the CPU might still be unprotected. Some Zen 4 motherboards do support ECC. ASUS lists it in their manuals and exposes settings for it in their EFI setup, for example. As for being sure that it's working, I suppose that depends on the OS. This addition in Linux 6.5 looks helpful: https://www.phoronix.com/news/AMD-EDAC-Ryzen-7000-Series https://www.phoronix.com/news/AMD-EDAC-Ryzen-7000-Series