Investigation of the SLI x16 chipset’s PCI Express bandwidth

NVIDIA has with its nForce4 SLI X16 chipset developed a platform that allows x16 bandwidth for each video card in an SLI system, at least that is what NVIDIA claims. The solution has been a bit unorthodox though, as it had to use two chips to acquire this and when ATI launched its own chipset with “true” support for double x16 lanes, RD580, it of course took the time to frown upon NVIDIA’s SLI X16 chipset. It claimed that the bandwidth did not live up to the performance that NVIDIA claimed and that the reason was the use of two chips, connected by one HT bus. At PC Perspective they’ve now published an article where they investigate this and the results are very clear. Today’s system can’t tell the difference between ATI and NVIDIA’s x16 solutions.

:: Read on at PC Perspective