Jesper, That is a nice machine you are having. I am wondering the reason why you would like a clockspeed change. Even the fasted processor will not run more as two times faster. Do not expect increase on that, it doesn't since 2003. No, no moore anymore but Herb Sutter.

Decrease in response times / turnaround times must come from better algorithmes. With this you still easily can see getting improvements of a 10 fold (10%) of the original processing time.
Better coding better parallel processing better planning.