Managed to get an old HP Z400 workstation for the equivalent of $75 USD. Xeon W3520, 6x2gb of ram and I replaced the Quadro FX580 with a GT 730 I had laying
HP Workstation Z400 Memory Upgrades @Memory.NET
How to install 16GB of memory/ram into an HP Z400 Workstation - YouTube
Solved: Z400 X5690 W3690 Fastest Processors - HP Support Community - 5683601
16GB KIT (4 x 4GB) for HP-Compaq Z Workstation Series Z200 Z400 (4 DIMM Slots) Z400 (6 DIMM Slots). DIMM DDR3 ECC Registered PC3-10600E 1333MHz Dual Rank Server Ram Memory. Genuine A-Tech