Faster 6800GS Auto-Overclocks Slower 6800GS in SLI

We plugged the XFX Geforce 6800GS in the first PCIe graphic slot and the Leadtek 6800GS in the second PCIe slot. We checked the frequencies and learned that both cards are working at XFX default speed.. ..The machine with an XFX 6800GS card and the now overclocked Leadtek was very stabile during our first test.

It’s very easy to conclude that the first card is dictating the clock speed of the other. Cards will run together but, if you plug a slower card in the first slot, you will lose some performance. If you plug the faster card into the first slot, you will gain some performance. So we strongly suggest you do the latter. If you buy two cards from the same vendor you don’t need to worry about it.

the Inquirer