My 633 celeron chip has a 370 socket 100 buss speed. I've seen Pentium III's that go up to 1.4g, they use the 370 socket, I'm not sure of the buss speed. Also 1.2g PIII's 370 scoket that use 133 buss speeds. My main question is can I use a higher buss speed chip? I was just searching for info on this and found this site, It's awesome! Thanks! Steve