BTW, if you want to overclock a Duron, get the 600. IMO you won't get a better result if you spend more money on a faster stock Duron. Also, if you get the A7V, make sure that the store lists the A7V as having dipswitches, you won't be able to overclock your Duron so easily. An ABIT KT7 will let you overclock within the BIOS, as long as the Duron is unlocked, as with the A7V.