hay guys I have a amd fx 4170 in my gaming pc I know its not the best of cpu's but I was on a budget! would have liked a i5 or a i7, anyhow I need to make do with what I have rite now, anyway I have a asrock 990 extreme mobo corsair builders series cxm 750w psu, 16gb of ram with a evga 650ti boost oc. its my birthday soon so I have asked for another evga 650ti so I can SLI, my question is would my cpu bottleneck the gpus or is there enough power to run both gpu cards, it runs at 4.20ghz! I know people don't class the fx4170 as a gaming cpu but surely it has enough power to run both gpus at 1080p with steady fps. would like to run games like bioshock metro the new call of duty at high settings, with a stable 30 to 60 fps.