I have a dual Xeon v4 2690, 64gb memory, multiple raid drives, and 2 Nvidia gtx980ti for gpu compute purposes. Best investment in a solid server backend for research and development ever. Not used for any frontend applications. Mine is not for sale.
I have dual processor zeon quad core Dell with 24 GB ram for sale $300 bucks, with 2 nvidia graphics cards to handle 8 monitors