I experimented today with setting the CPU affinity of the two instances of folding that I am running on my Q6600. As I said above, I was running about 20% idle before. I did: taskset -c 0,1 ./FaH for one instance (FaH is a file that contains ./Fah6 -smp -local -forceasm -verbosity 9) and taskset -c...

Here's a linux howto. 1 box is getting 4500PPD with 1 box.
http://foldingforum.org/viewtopic.php?f=12&t=124
People are also getting good results with SMP Affinity Changer with windows.
http://foldingforum.org/viewtopic.php?t=136