Out of the the high end grapihcs card from NVIDIA, the GeForce 6800GT has the best bang for the buck. Now selling around US$ 250 to 350, it's the most affordable SM 3.0 graphics card that won't slow to a crawl under high details with AA and AF on. Today, we're looking at three cards: the ASUS EN6800GT, Galaxy Glacier 6800GT and Leadtek PX6800GT THD.