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I wasn't commenting on the speed of ECC memory, although from what I've seen manufacturers don't offer ECC memory modules with a speed as high as non-ECC versio

I wasn't commenting on the speed of ECC memory, although from what I've seen manufacturers don't offer ECC memory modules with a speed as high as non-ECC versions. Anyway what bugs me about Zen < 4 is that you can install ECC memory, but you can't be sure that ECC is really working on some motherboards. For Zen 4 at least there's DDR5 with its on-die ECC, but the path to the CPU might still be unprotected.

foresto 3y ago
> 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
deaddodo 3y ago
You can most certainly test ECC functionality on unqualified boards using a Linux LiveCD/USB. And there are plenty of boards that have gone through the process of getting ECC qualified, and advertise the feature. ASUS, for instance.