My CPU is Core2Duo E7400 and I thought about doing a whole new build but was wondering if upgrading just the GPU from GTS 250 (512mb ram version) to GTX 560 and also getting a SSD for a boot drive would yield a nice performance boost to last another year or so, or is the CPU just too slow that it'll be a bottleneck? I'm not too concerned about playing the latest games, it's just that when I'm rendering a video I really can't do anything else on the desktop because the CPU is lacking.