I agree with the premise of the article - however, as one notch in Nvidia's favor, I think most benchmarks demonstrate that the GTX 590 scales better in SLI tha

I agree with the premise of the article - however, as one notch in Nvidia's favor, I think most benchmarks demonstrate that the GTX 590 scales better in SLI than the Radeon 6990 does in Crossfire. Provided, you have a nuclear power plant in your computer to power SLI/Crossfire...