[celrod]

Zen5 appears to officially support up to DDR5 5600, but unfortunately all of the ASRock Rack or Supermicro boards I looked at only supported DDR5 5200.

I may wait for new Zen5 boards, or maybe take a gamble on something like the Asus ProArt, where I saw comments online indicating that ECC is (unofficially?) supported.

Looking forward to Ryzen 9000 ECC benchmarks.

[kvemkon]

Or other ASUS mainboards. For now ASUS seems to be the only desktop mainboard manufacturer that officially mentions in the docs support of "ECC and Non-ECC, Un-buffered Memory".

[celrod]

Yes, I see now that while not advertised on seller's websites, Asus's product pages do indeed say that.