I upgraded to a 8600 gt overclocked the other day. I HAD purchased a 8800 gts, but the stupid thing wouldn't fit due to a heat sink being in the way. I swear, this is the LAST PC package I ever buy. (Unless, for some reason, I can afford alienware next time.) Anyhoo, I don't know if the 8600 comes in agp, but it was affordable (<$200) and since the last driver update, works great.