Hello! My cousin recently gifted me an HD 7850 since I haven't had a video card in a loong time. Now while I also look for a decent (600W, 80 plus?) power supply, it came to my mind upgrading my Intel G645 too, since it's a dual core and I suppose it'll bottleneck the GPU. I don't really understand too much about PC components, so I'd like to ask, what would be a decent upgrade to my actual processor? Preferably something that I can still get unused, I know it's an old motherboard and there are a lot of deals going on around there, but where I live, I can't simply trust getting used stuff (outside the US). Thanks in advance!