Trying to get my i7 920 to 4GHz. Currently I have all voltages at stock, other than CPU vcore, which I have been slowly pushing up, at 1.25v right now. I'm trying to run 200x20, as 200 will give me 1600mhz mem, which will be useful when I get a new ram kit. So right now all I'm doing is raising cpu vcore one notch up when I fail a test. Is 200 bclk very high? Should I need voltages in other areas at this point?