I recently upgraded from 1gb to 2 gb of ram. I am running vista x64. When I was running 1gb of ram, vista would idle at 50% ram, which i though was fair enough. Now I have upgraded to 2gb of ram, it is still idling at 50% ram, but nothing software based has changed. Where has this extra half a gig of memory usage come from? Does it reduce itself when I play a game? One reason I bought 2gb of memory is becasue I though it would give my games 1.5gb of memory as opposed to only 0.5 gb of memory, when I was running 1gb total sys memory. Anyone know what is going on? My dad has 4gb of mem, I will have to check tonight to see if vista has magically found 2gb worth of memory usage to idle with. Hope someone can help, Any thoughts/ideas greatly appreciated. Thanks.