> IIRC AMD doesn't validate the ECC functionality on their ryzen chips? So you could theoretically end up with a defective ECC circuitry if unlucky. This is no

> IIRC AMD doesn't validate the ECC functionality on their ryzen chips? So you could theoretically end up with a defective ECC circuitry if unlucky. This is not the case. Ryzen, Threadripper, and EPYC use a unified memory controller that has fully validated/qualified/supported ECC capability. The only difference between the memory controllers in these CPUs is the number of them (Threadripper and EPYC will have multiple memory controller to support the extra memory channels). When AMD claims that ECC on Ryzen isn't validated, they're talking about the platform as a whole, not the CPU specifically. ECC support on consumer CPUs depends on the motherboard supporting it. Unlike on Threadripper and EPYC (and also unlike Intel's approach), ECC is not a guaranteed feature of the Ryzen platform, so people who want that functionality need to explicitly looks for motherboards that have it (in the same way that you'd need to explicitly verify PCIe bifurcation support). However, if the motherboard supports it, ECC on Ryzen is a fully supported, validated, you-can-RMA-if-it-doesn't-work feature.