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 DDR4 RAM 4GB PC4-2400T Workstation Z400 Series
A-Tech 24GB ECC Unbuffered Memory Kit (6 x 4GB) for HP Z400 Workstation - ECC UDIMM DDR3 PC3-10600 1333MHz 240-Pin DIMM 2Rx8 1.5V Dual Rank RAM (AM080899) at Amazon.com
HP Z400 Workstation Reviewed - Videomaker
4GB RAM Memory Upgrade for HP Workstation Z400 PC3-10600E DDR3 1333MHz 2Rx8 ECC Unbuffered UB DIMM Module (MemoryMasters) at Amazon.com
A-Tech 4GB for HP HP Z400 Workstation (6 DIMM Slots) (1 x 4GB) PC3-12800 (DDR3-1600) ECC Unbuffered UDIMM 240-Pin 1Rx8 1.35V Server Memory RAM at Amazon.com
Amazon.com: HP Z400 Workstation PC - Intel Xeon W3520 2.67 GHz Quad-Core CPU, 24 GB DDR3 RAM, 2 TB Hard Drive, DVD-ROM, Windows 7 Professional : Electronics
HP Z400 Workstation FM067UT W3520 2.6GHz/ 6GB RAM/ 500GB/ FX1800 [Z400] - $369.00 : Professional Multi Monitor Workstations, Graphics Card Experts
HP Z400 Workstation FMB-0902 Motherboard w/ Xeon CPU, Heat Sink, Fan & 10 GB RAM | eBay
How to install 16GB of memory/ram into an HP Z400 Workstation - YouTube
White HP Z400 Workstation, For Commercial at Rs 21000 in Coimbatore | ID: 23800666733
CMS 8GB (2X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z400 Workstation for Server Only - B80 at Amazon.com