Get yourself another 1GB of ram if you can, that will help alot. Vista handles ram differently. I run Home Premium and had 2GB, got an extra gig when I saw that Vista is using 1022mb of system ram for video graghics (that amount includes the 256mb of your card's). So that means your system will have 768mb less ram to work with (excluding graphics). Going to 3GB your video ram total would stay the same (1022mb) but your system will run more efficently and quicker overall, especially if running SLI.