I've got a Dell comp with a P3 500 Katmai on a 440BX mobo. Is it possible to upgrade the cpu without replacing the mobo? I checked out the support site, and for my particular model (Dell Dimension XPS T) it had processor speed (that I assume the mobo will support) up to 800mhz on this 440BX. If this is possible, any input is appreciated. Also, some XPS T models had a little "r" after the model number. Mine does not. Don't know if that makes a difference, just for information. Again, thanks for any input.