Well i know tge site does work. My gpu was hitting 100% in fpsvr on the i5 6500 with 16g of ram(42% bottleneck). Fps was limited & steam only rec 16% gpu. After switching higher frames more stable & steam jacked it’s gpu ss setting to 42.5%.
The site works well to get an idea if it is. Sure like Outervision’s extreme psu calculator will not be perfect but does the job well enough.
Server Cpus are often a better series. Socket 2011 isn’t it?
Lots of folks know this performance deal & some use serverboards with dual processors to boot with only having 1 x16 slot.