Selling my Optimus Foundation AM4/AM5 CPU Block, kept my 7800x3d at 50-60 when gaming at heavy load so I would say it’s a very good block, block screws might need some cleaning before use, and another flush with distilled water, other than that it works perfectly, all the holes still hold thread for fittings ,any questions feel free to ask! I may or may not have the box if I do ill include it when shipping :)