Re: Video Card
As rohan said, theoretically it'll decrease your speed by half. However, on an 8800 Ultra those are built on the X16 1.0 bus. The only place that you really need 2.0 is on a GX2, 4870X2 or the GTX295. Any other cards honestly will not use the full bandwidth.
-Desktop- Dual Monitor, Q8200 2.34Ghz, 8GB, 1TB, XFX 6850, 7 Ultimate
-ASUS UL50- SU7300, 4GB, 500GB, G210M, 7 Home Premium 64, XP Pro
-HP NC6400- Core Duo 1.86Ghz, 2.5GB, 64GB SSD, x1300, XP Pro