4770 Crossfire x16 vs. x8

Hi.

Does x16 make a difference compared to x8 with two of these cards? My motherboard, M4A79T Deluxe, has four PCI-E slots, but the two x16 ones are too far apart to reach with the crossfire bridge. I even have one of the longer cables.

My CPU is an AMD Phenom II X4 955 and my maximum resolution is 1680x1050. I play a variety of new and older games but nothing as demanding as Crysis. Fallout 3 is likely the heaviest at the moment.

Great, thanks.

Does device manager see the second card? Does it apply teh drivers to it correctly?

FYI, you only need one bridge to crossfire.

Make sure any settign in the bios to enable the second PCIe slot are selected. Double check the card is seated correctly, and ensure both cards function on their own.

You will notice no difference... it would only matter if you were using 2 GTX295... even there, I don't know.

What we learned is that SLI and Crossfire are extremely powerful solution with middle and middle high-end card, but two GTX295 or 4890 hurt performances.

Not normal that a core i7 perfoms better with two GTX260 over two GTX295 (check tomshardware latest budget PCs, 1300$ and 2000$)