Then again I may be totally wrong because I think Reaver has 3 GTX295's (6 gpu's) running together.
Nah, you can have 4 dual gpu cards for a total of 8 gpus. Its not an SLi restriction as you don't need SLi for either boinc or folding. In fact you can run 4 nvidia cards on a Crossfire motherboard if it has the requisite number of slots free
