The Z2 version doesn't use P96 or CyberGraphX drivers. Z2 model can have 1, 2 or 4 mg ram onboard while the Z3 has 4 mg ram. Oviously the Z3 model would be the better one to have in the A3000, while the Z2 is suited for the A2000. The Z2 is a smaller card than the Z3.
<-Z2 - Z3->
