So I'm going to upgrade my computer for Rome 2. Right now I have an i7-2600 at 3.4 GHz and a AMD 6890. I'm going upgrade my GPU to a AMD 7970, but I unfortunately don't have enough cash for a new CPU. I DO however enough cash for a mid-high tier cooler and I'm now planning to OC my i7-2600 to 4.2-4.3 GHz. So with that said, can anyone with specs similar to this tell me what I can expect?