During video encoding Nvidia nForce 680i SLI cannot boast superior results. It is slightly behind Intel 975X Express and Intel P965 Express based mainboards.
Similar picture can be observed in Adobe Photoshop. However, the performance difference here doesn’t exceed 2-3%, which is not a dramatic failure at all.
In WinRAR i975X manages to show a much higher result than Nvidia nForce 680i SLI.
3ds max is a pretty heavy professional application, and the new Nvidia nForce 680i SLI chipset cannot really show its best here. The all-Intel systems ensure about 4-5% performance advantage during final rendering as well as in viewports.