Luthier has already posted the Nvidia profile that will eventually become part of the official drivers. It works very well in SLI now even in 4way SLI.
If your not capable of manually creating a profile using the info Luthier provided then just wait for Nvidia to add it to a driver soon.
It does work very well now, the only limiting factor is the rendering thread on the CPU has now completely maxed on my system which means the GPU usage sits around 50% for each GPU over complex terrain but they do all go up to 80% on occasion when the scene is less complex.
So bottom line it works exactly as intended, the limiting factor to performance increases pretty much comes down to how fast your CPU is. My CPU is OC to 5Ghz which explains why I get more of a performance increase than others.
To be honest I think there is currently only enough CPU horsepower with todays CPUs to drive a 2 way SLI system to 80% usage or higher regularly on CLOD.
So anything more than 2 cards is pretty much wasted on CLOD because of its high CPU Ghz dependence.
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