Heres a great video of a big monstrous graphic card, the PNY GeForce 8800 GTX 768MB.
The PNY GeForce 8800 GTX 768MB PCI Express graphics card features the world’s first DirectX 10 GPU and a powerful unified architecture that delivers an incredibly true-to-life gaming experience.
Power through games at record speeds and charge through game maps with vividly realistic, sun-up to sun-down HDR lighting effects while steering clear of mind-blowing physics effects such as explosions, fire, and smoke.

This is indeed a great card, really awesome in performance and is surely a future proof card.