Strange that you have so little, my 3.0 GHz gets full speed mostly. Graphics settings shouldn't really matter when you have a good graphic card (Except AA which is a little broken at the moment). You sure everything is up to date, can you run modern computer games well?
Specs: intel i5 3570k @ 3.4GHz;
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
