If you are talking about games, you won't see much improvement over 4Ghz, but if you are talking rendering, encoding, calculation, or other CPU intensive tasks, every extra bit of power will help
If you are talking about games, you won't see much improvement over 4Ghz, but if you are talking rendering, encoding, calculation, or other CPU intensive tasks, every extra bit of power will help
Assuming you mean gaming performance, it depends on your graphics card. If you've got 3 580s going, a couple of extra mhz will make a difference. What are your CPU and other specs?