FASTEST CARD FOR PCI-E X4

PCI-E 1.0 or 2.0 because a 4x PCI-E 2.0 slot is equivalent to an 8x slot at PCI-E 1.0 speeds and wouldnt bottleneck as bad

i dont know, how do i find out? do i use cpuz, gpuz, or go to the manufacturers website?

i just checked the specs on newegg, it says "1 x PCI-E x16 (max. 2GB/s, x4 mode)"

is tht any help...?

A 4670 or 4770 probably wouldn't bottleneck too badly. A 9600GT would work too.

xcellent, thnx.

I believe i read somewhere increasing the pcie frequency from 100mhz would help relieve the bottleneck. =]

If the specs you read are correct, then it's PCI-E 2.0 (4X500Gb/s):

http://en.wikipedia.org/wiki/PCI_Express

This is equal to PCI-E 1.0/1.1 at X8.
That would mean any of the cards so far listed should run with no loss of performance.
There's an article on Toms about PCI-E bandwidth use but it's for the older PCI-E 1.0/1.1 spec, I'll try to find and link to it.

Edit, found it!
http://www.tomshardware.co.uk/pci-express-2.0,review-30...

The 9800GX2 results are quite interesting;)

[This is an old thread, but Google likes it.] Those who have x4 or x8 PCIe slots but no x16 slots for video cards may wish to consider the AMD ATI Firepro 2700 x1 http://bit.ly/iJxbGZ. Worked fine in my aging Dell 2900 with dual monitors. Performance decent.