my trusty old octocore 2.8 (3,11) suffered a dead power supply today. and i need to replace it ASAP. there is a local guy selling an octocore 3.0 (2,1) at a reasonable price. my question is: his machine being a 2,1 model and mine being a 3,11. does that spec really have anything to do with performance. other than one wanting a faster/different kind of ram?