[QUOTE][yes it is a dual core.. do you think it would be that much of a bottleneck??
No, it would not be a bottleneck, especially if you can get the clock speeds up a bit. Modern games are much more GPU bound and like Nvidia says, soon, we won't even need a CPU. The 8800GTS at that price is a very good buy, so I'd say get that, but check HD 3850 prices first, as it performs as well as the G80 GTS but is more energy efficient (55nm) and much more overclockable.
EDIT: I'd go for this: http://www.newegg.com/Product/Produc...82E16814241068