fulopd-
The problem w/ the kt7-raid (and all kt133 chipset based mobo's) is that they cannot (in most cases) take a 133fsb. I have the same mobo and I can only get 112fsb (which turns out to be 224 because of the DDR nature of the chipset (ev6)). So in essence, what I am trying to say is... no you cannot 🙂. Also, since you are running pc100 ram you will not be able to go much higher than 100fsb because of the limitation of your ram (unless you have some high quality ram that will take you higher...) The only configuration for the kt7 board for the ram frequency is either host clock (fsb) or host+pci clock (fsb + pci mhz speeds). Anyway, hope it helps...