HP Z230 Workstation, Xeon E3 V3, 4 cores, up to 32GB DRAM, 400W. Xeon E3-1245v3 Quad-core OR Xeon E3-1240v3 Quad-core. Bought the other two to add in a farm but never got round to building said render farm so they have been sitting sealed and out of the way.
eBay