I am about to upgrade my monitor. My current one is 1680x1050 and the new one will be 1920x1200. My 8800 GT has been holding up pretty well with recent games and I am super psyched about StarCraft 2 next week. I am concerned that performance with my new monitor will not be acceptable. Does anyone use an 8800 GT with a 1920x1200 monitor? Can I put off buying a new graphics card for 6 months or so, or is it a must-have with the new screen?