If you need EEC ram?
I know technically AMD supports it for their Ryzen line, but everything I’ve read says it’s up to the motherboard manufacturer to support it. And even if the motherboard manufacturer says you can use ECC ram, it doesn’t mean it will actually “use” it correctly.
So you mainly need to rely on others doing tests on their own systems to confirm if the motherboard actually uses it.
My understanding is that you need to use the EPYC line for guaranteed ECC usage, which is really expensive.
Intel’s W series Xeons start off at a reasonable price, and there are even cheaper Celerons that will use ECC ram.