> Another issue is motherboard firmware. Even though AMD supplies the memory init code, the configuration can be tweaked by motherboard vendor, and they might s

> Another issue is motherboard firmware. Even though AMD supplies the memory init code, the configuration can be tweaked by motherboard vendor, and they might simply break ECC support accidentally (even by something as simple as making a toggle default to false then forgot to expose it in configuration menu). I think some Gigabyte boards are infamous for this in certain circle OTOH: Gigabyte might have a Threadripper PRO motherboard (WRX80 chipset) coming out in the future