Lower is not better... end depends on many other things... Even so, 1464 it is not so diferent from 1400... In your case it is not about the MoBo, but I have a friend and with E7400@4500 and memory at 1080 had a beter result then me with E7400@4600 and memory runing at 1200 Mhz. But his MoBo is DFI... in the end I beet him but with some work...