Look at the Motherboard Manufacturer's Specs under RAM MEMORY. It will tell you if it supports ECC Memory or not.
Here is example of a ASRock X570 Motherboard: ASRock > X570 Taichi
Ryzen Pro Processors fully support ECC Mode. But Ryzen Pro processors are OEM type and not sold in Retail stores: https://www.amd.com/en/ryzen-pro
This previous Tech thread (2019) talks about Ryzen 3rd generation processors and ECC RAM MEMORY: How's the ECC RAM support with the 3000 series? | Hacker News
Thank you very much to all the people who have responded. It seems that I will not be able to take advantage of the ECC ram modules I have and I have already bought other ram modules without ECC. A greeting.
Your Ryzen Retail CPU does support ECC RAM MEMORY. It just is not validated by AMD.
Read this Tech Article that explains how Retail Ryzen Processors support ECC: https://www.overclock3d.net/news/cpu_mainboard/amd_confirms_that_ryzen_supports_ecc_memory/1
ECC is not disabled. It works, but not validated for our consumer client platform.Validated means run it through server/workstation grade testing. For the first Ryzen processors, focused on the prosumer/gaming market, this feature is enabled and working but not validated by AMD. You should not have issues creating a whitebox homelab or NAS with ECC memory enabled.yes, if you enable ECC support in the BIOS so check with the MB feature list before you buy.
AMD supporting ECC memory on their desktop Ryzen platforms will make them the CPU maker of choice when home users create their own workstations, FreeNAS file servers and other system types that can benefit from ECC memory.
Right now support for ECC memory is heavily restricted on Intel platforms, making ECC memory support a nice boost for AMD's Ryzen CPU architecture and the easy choice for those that want to create a home ZFS server or NAS.
Of all of the AM4 motherboards I have or have built for friends. None have ECC options. zilch.
ECC was never a big seller and even servers do not use it much. Financial servers use it but that is due to the need for reliable calculations etc.