I have a system with a Xeon 8173M (Skylake-generation, 28 cores + HT) with 256GB in a desktop ATX case. I bought the CPU and RAM second hand, and I would guess

I have a system with a Xeon 8173M (Skylake-generation, 28 cores + HT) with 256GB in a desktop ATX case. I bought the CPU and RAM second hand, and I would guess I spent €600 between them. I bought a new Supermicro X11SPL-F motherboard which cost about €500. Add in PSU, SSD, the case, etc. and it was under €1,500 for a considerable amount of computing power which doesn't make a lot of noise and has reasonable power consumption for my needs.