Under heavy budget(275 total so im figuring 130 max on a cpu) im building a comp for some who was running a 500mhz celeron. thus im trying to decide on what cpu would fit his needs best. his needs being, gaming but not very graphically demanding games and multimedia. anyways my question is would there be a difference preformance wise from a Athlon XP 3000 to the Athlon64 2800?