I am getting some folding happening again. I have a decent work computer with a i7 3770 I also have decided to put my home computer to use. I have an old AMD Phenom 2 at 3GHz with a ATI HD 7770. What PPD should I expect from the HD7770? It says it is good for about 3000-4000 PPD which don't really seem worth the power cost. I have been reading that it is best to have a few WUs running on the card? It also takes away a core from the CPU to GPU fold What are your recommendations for this set up?