HD4850 Running At 8x In 16x Slot

I just recently got my full computer system from Ncix.com (i had them build and test it)

I have a visiontek HD4850, and GPU-Z says it's in the 16x Slot @ 8x Mode, catalyst says something about bus speeds. I really need your help i am at all very high 2xAA in crysis and i only get 10-20FPS. Toms Hardware review says i should be getting 30+FPS.





Specs:

Corsair TX650W
Corsair XMS2 4GB 800MHZ
E8400 @ 3.0GHZ
Asus P5K P35 Mobo
Visiontek HD4850
Coolmaster CM 690
Vista Home Premium 64bit
20 inch LG monitor (1680x1050)

I checked BIOS but i couldn't find anything about PCI-E slots. It is running at 60C right now so overheating/underclocking isn't the problem.

FYI: It IS in the Blue 16x slot, i checked.

My Motherboard: http://www.ncix.com/products/index [...] 95&vpn=P5K

Help would be greatly appreciated, i know nothing of more advanced programs since i upgraded from a P4 2.6GHZ, FX5200, 1GB DDR RAM...

I don't think the MB or catalyst drivers will install on the wrong OS (32 vs 64)?

Every time I have intentionally or accidentally attempted to install the wrong drivers, I have received an error on install.

^It should say 16x. It says PCIe x16 not PCIe 2.0 x16.

Have you checked the BIOS to make sure it is selected to run full x16.