Used 32GB (with ecc on, it's more like 30GB) gfx1030 accelerator cards, supported by ROCm 10 in Linux. These are datacenter cards and have no video output nor active cooling - passive airflow is required.

Got 1 more if you want to buy them all send a message and I'll update the listing for 2x v620 (saves postage instead of 2 individual packages).