Just wanted to show that this is the power of a GPU. This is a single Titan X running for a little over a day. We went from a 2000 average to over 400000 average and my 24 hour average hasn't settled yet. So SPud, although I respect your wanting to tinker with all the old parts but if you're really serious about folding all you need to do is get one GTX 970. You'll do 3/4 my output on stock with very little heat output. Something to think about.