no, amd does not support ddr2, ALTHOUGH i think they may make faster than ddr400 regular ddr memory, tho im not sure. my crucial ballistix hit ddr500 at 3-4-4-8 or something like that, which isnt bad, but they are too power hungry so i couldnt provide nuff juice because of mobo. also , my proc holds me back, but just so you know, they EASILY reach ddr500...