Hey guys, I am an iOS developer, and, since being strapped for cash, I have a MacPro1,1. Right now, it has a GT210, but I ordered the power cable to put my HD6790 in it. Now, will this help with the general snappiness of the machine? Second, I also plan to install new CPUs in it, what is recommended? Lastly, is there any other upgrades I should do to my 1,1? It runs fairly okay right now, but it could be better. Thanks guys!