I have a P4 1.8 running at 400. I want to upgrade my mobo because it runs on pc133 sdram. i heard that replacing your mobo means u will most likely reinstall winxp, is this true? also, my original reason for posting this: what kind of mem can i get w/ a new board that runs at 400 fsb? i heard only DDR 2100, but i would like to run my memory at 333 or faster. should i wait for the Granite Bay Chipset? or is that for ppl w/ faster Intel chips then my 1.8?