Laptops based on the Intel 915 chipset have a 533MHz front side bus and ship with a matching Sonoma processor. Dothan laptops only have a 400MHz FSB. If you pull the BSEL[0] pin on a 400MHz FSB ...

Boards with this chipset can feature either an Intel Pentium processor or VIA processor on front side bus (FSB). Cadence signal integrity tools are used extensively to arrive at the optimum topology ...