Here is a comparison I just did with one of my mild OC'd 4850's. I ran loose timings @ 800mhz Ram, 1800mhz HT/1800mhz NB 3.3ghz CPU. I ran another test with same 3.3ghz CPU and 2400mhz HT/2400mhz NB, 1066mhz and a lil tighter timings. notice the scores...CPU changed a lil, but the overall went up a lot more.