

We have been working behind the scenes with some of the Folding @ Home crew and I managed to get a hold of an internal beta benchmarking application which enables us to run a script on each machine and leave it for 48 hours to ascertain CPU performance. The Folding@Home project uses SSE on intel processors, 3dnow! on AMD processors and Altivec on PowerPCs.
From http://www.driverheaven.net/reviews/intelV8/folding.php