My question is this: I plan on upgrading my video card soon to a 6950 from 5770 crossfire. The 2x5770 doesn't scale correctly in TF2. My goal is to max out graphics 1920x1080 on a 32" monitor. I currently am using a 4GB DDR2 RAM kit. I want to know if my RAM would bottleneck the 6950 or if I need DDR3.