Alright, even though my nick suggests that I am and will always be on the "green" side, I will try to help if you haven't already built the system

. In the computer world, timing is everything. Even if you buy the top dog processor, it will already be old after six months. That is the reason why you should NEVER buy a processor that costs above 500$. At this time, an upgrade seems pointless because Intel is already whispering something about the new Nehalems. What could happen? You buy a processor for 300$ and the next day that same processor costs half the price. I would wait a little longer if I was in your skin. On the other side, your processor is very outdated, and although it achieves high overclock performance, that doesn't mean everything. You see, Intel's Core2Duo architecture is a bit messy. The greatest reason is that Core2's do not have L3 cache. Because of this, communication of the processor and the memory is a bit crippled on these, and that can sometimes cause stuttering in gaming even on the highest end processors. Intel has seen this and fixed it in the i7 architecture, so it shouldn't be a problem on i7's (although I didn't have a personal experience with these). Buying an Intel setup is always a gamble. Intel is very hard on innovations and, as I mentioned before, new tech can come out every day. But it seems that you can't go fully wrong with the i7 because the new platform should be future-proof. At last, have you considered buying and AMD system
😉? I will do that, because I have Intel E4600. Going with a Phenom 955 on an AM3 board will give you killer performance in gaming while the new AM3 boards will stay in play probably for a long time. Anyway, I think I mentioned this in another article, but here are the conclusions:
Q6600 choice: Bad choice. This processor is very outdated and you probably wouldn't want to spend money on some coolers when new processors are in the corner. The lowest end i7 will kill this quad core, maybe even when it is downclocked.
I7 choice: A total gamble. Could be a perfect solution, but could be outdated soon because of Intel's aggressive policy. This processor will end any stuttering in games but may have problems on high resolutions. It is a gamble for gaming, but for compressing, video encoding and 3D rendering a bogeyman.
(Alternative) Phenom II choice: Probably a good choice if you are a serious gamer who wants performance, and not to be praised at work for his i7. It will bring nearly the same performance as the i7 in gaming, so if gaming is the only thing you do, go with it. I7 beats it in other stuff, though...
Hope I helped and good luck with a computer!