Should my fsb be run at 133x2.5 or 166x2? Both are 333 which should run with my corsair pc2700 ram. The problem is that when I try to do 166x2 and then reboot my bios resorts to default values. There is a fsb jumper on my motherboard (Albatron KT400+ pro kt333) maybe I have ot change that. I think the options are 100, 133 and 166 and I am presently at 133. Thanks for the help.