If your intent is for gaming then the i5 + 5850 build is best.
The i5 is an awesome chip with alot of OC potential. The i7 920 runs triple channel memory which can be a benefit in some area's but when it comes down to it, you are paying minimal improvement. The i7 is also pretty tried and true. The i5 is new and has already had some issue with certain mobo's that used sockets from Foxconn. (they burned up when heavily oced). I believe this was resolved going forward.
If you have the money for an i7, get the i7. But it sounds like you are on a budget and in that case get the system with the better graphics. The i5 will do you well. And do like above stated, get a board that will do 8x 8x not 16x 4x.
You can mix and match any of those 4 FTW........ If you want to get the system up and running NOW, like today, this week. Getting a 5850 right now is next to IMPOSSIBLE. Advantage of the newer card are talked about everywhere. DX11 3 monitors, but IMO the 40nm die also. Does someone know a quick history of die size for these
2007 era 8600 gt, runs up to 90c I believe 90nm ?
how many die shrinks has nvdia had ?
What was ATI using on last years 4850,70,70 55nm ?
and were they always 55nm ?
Thanks for the info, sorry for asking in the ops thread !