Well, I am running 2 systems, the main one you can see it in my sig, and usually is a 20k ppd system. The other one is doing only SMP folding, is a Phenom II X940@3.3GHz generating around 30k points/week. I will be taking out the 9800GTX+ from the main system and add it to the second one, which belongs to my gf, and the 9800GTX+ will be replaced by a 9800GX2 which from what I have seen will add around more 10K PPD. In January 2012 also a new system will be added to the processing, consisting of 2 hexacore Opterons which will mean another 12-14k PPD but I might be selling the least productive system after that. My gf will get my present system and I will take the Opteron workstation, which can be upgraded with 6 video cards on regular pci and pci express. Granted they will only be low power cards like the GT430 or GT520 but 4xGT430 can generate about 16K PPD so the potential is pretty good. I might be even moving up the ranks and change the color on the kakao stats grill. That doesn't mean we manipulate the system but if you could run your machine under linux, yes, that could be done. But I think that practice is already coming to an end. To get legit bigadv units you will need a 1000$ machine.