Not sure, but my crucial pc2100 does 150fsb, cas2 @ 2.7v and was only U.S. $36 and I think they just had a price cut. Did I mention free shiping(in the U.S. only I think). PC2400 might get a little better results, but how high of fsb are you looking for? I myself won't go above 150 because I don't want to damage my pci cards/harddrive.