Once you reach the point where games start to require the best in video graphics like METRO 2033 or Crysis 2 whether because it is necessary for the complete visual experience or simply because it is poorly optimized, does CPU strength still play as big a role in smooth performance? I don't mean bottlenecking but for instance, would the performance from a GTX 580 and an i5-2500k versus a GTX 580 paired with an i7-980x really be roughly the same or minimally different?