I just got my P4 1.6a with an Abit TH7ii-Raid + Samsung 16Device RDRAM. I'm also using the stock heatsink with arctic silver 3. When i set the fsb to 163x3 and used the the prime stress test, it was fine, but when I tried to install winzip, it wouldn't setup. Then after a reboot WinXP said some directory was corrupt. Right now my fsb is at 157x3 and it is stable. I have a Western Digital 120GB SE and i'm wondering if anybody have any ideas how to prevent the corruptions from happening?