I mean IPC wise the Yorkfield ones are on par with AMD’s Bulldozer, but they don’t clock as nearly as high. They make great budget gaming rigs but don’t expect to play any high end AAA games above low-medium settings (can verify, got a Xeon X3230 which is the same thing as the Q6700 overclocked to 3.2GHz and it plays gta v on normal at about 35-45 fps with a gtx 1050 (non ti)). Also 775 CPU’s will bottleneck anything above a GTX 480, 570, and 750 ti to a pretty decent extent just to give you an idea from each price range.