DDR2 v. DDR3 and Intel vid driver v. NVIDIA

[tupelo3]

Can someone explain to me how much of a difference in these specs?

I see MacMALL is selling MBA with the former in both categories and i didnt know how much it will affect my performance. Should i spend the money for the upgraded specs?

 

[Eidorian]

You're really going to want the nVidia system for the 9400M G.

 

[Lanbrown]

To get the most out of Snow Leopard, you will want the DDR 3 system with the Nvidia graphics.