I have been eyeing a refurbished HP z230 (price:14k) for quite some time now. I was planning to upgrade the quadro GPU with used RTX 2060, which would total to a 25k (~14k+10k) build. The system has a 400w PSU and a free 6 pin pcie power supply for the GPU. the x16 pcie provides 75w and the 6pin...