It amazes me how much reviews differ. I've read
P4 2.53 158 FSB 4:5 ratio=395Mhz DDR ----
@AMD 3D
P4 2.4B 150FSB ?? Ratio ----
@ Active Hardware
P4 2.53 155FSB 412Mhz DDR ----
@ Hot Hardware
P4 2.26 158FSB 421Mhz DDR (162FSB Max - I assume at a 1:1 ratio) ----
@ Anandtech
Then
Hard OCP says they can't run the 3:4 or 4:5 ratio higher than a 133FSB. WTF???
I think I trust Evan's (Anandtech) reviews more than any of the others, since you can tell he really spends the time testing the board and settings.
I should find out Wednesday how much I can push my p4 2.66 and 2x512MB Corsair XMS3200, since my P4PE is due to arrive then.