Is that almost a sure thing? Reason I ask is that the board I have has a 100Mhz bus, or a 133Mhz bus, but no in-betweens, so if the CPU I get doesn't overclock to 133Mhz I am SOL and have to go with rated CPU speed. If worse comes to worse and 650's are iffy too, I will simply get a 600 and go for 800.