Part of an Article from "Geforce.com"

[Troll2k]

What I was trying to say was that of the 20% that do use multiple GPUs in Clod only 65.2% use SLI,which is off from Steam's account of 93%.

So yes,80% of Clod users use single GPUs,but of those that do have multiple GPUs only 65.2% are SLI.

So the SLI users for Clod are just a spec on the driver developers monitor.