Was wondering if upgrading my motherboard and memory would be worth it or if I should just wait till I want to upgrade my cpu to the newer FSB. Will i really see that big of an improvement if I did upgrade? Personally I feel as if it wont, and i should just drop the money into a new graphics card, but any opinions would be nice. Also if you think a new mobo / memory is a good choice some suggestions would be greatly appreciated.
If you mean the i7 chip and DDR3, I'd save the money and get that setup. I wouldn't bother upgrading your present mobo and CPU with another 775 socket CPU unless you found a really good deal.
I have a 4870/512 with a QX9650 and I think it does a great job. But I don't think that either it or a GTX 260 would be worthwhile in your case. The slight gain in performance over your 8800 GT/512 probably wouldn't be worth the money spent.