Alright, right now I have 2gigs of PC 5200 DDR2 memory in my rig. I have an extra stick to put me at 3 gigs total. When I have 3 gigs my index score drops to 4.0. in Vista. With 2 it's 5.9. Anyways, all I want to use it for is ARMA. Which is better? I'll go to four gigs sooner or later, even though Vista reconizes 3.5.