hi

what is the fastest intel core 2 processor i can buy for my dell optiplex gx620?
it has a pentium 4 2.8ghz LGA 775 socket

I heard about the fsb bieng capped at 800mhz and wondered also if i could buy a dell optiplex board that supports intel core 2 or if their is any way to flash the BIOS to allow this

regards

Ash