noob SLI question

I have two XFX 6800 XTs configured to run SLI. If I use Nvidia's display
properties frequency settings to overclock, will it overclock both or only
one GPU? Should I turn off SLI and overclock each separately?

What settings should I expect would be stable?

Thanks

Overclocking will apply to both GPUs. As always, up the frequency 5 MHz at a
time, and check for artifacts with something like ATiTool (works on nVidia
cards). When you see artifacts, back off a notch.

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"Dave and Kim" wrote in message
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I have two XFX 6800 XTs configured to run SLI. If I use Nvidia's display
properties frequency settings to overclock, will it overclock both or only
one GPU? Should I turn off SLI and overclock each separately?

What settings should I expect would be stable?

Thanks