The AMD parts all have the ECC feature but the platform support outside of EPYC may as well not exist. Most motherboards for the Ryzen segment don’t do it properly or don’t do it at all, some support it but aren’t capable of reporting events to the operating system which is dumb. Ryzen laptops don’t have it either.

Closest you can come to a nuc with ecc is I think a mini server equipped with one of the four-core i3 parts that have ecc.

Probably not what you meant but https://ark.intel.com/content/www/us/en/ark/products/190108/... has support for Xeon (and ECC). Now how to actually practically source 32GB ECC enabled SO-DIMM sticks ..