A 5770 may be bottlenecked slightly by your CPU, but I can't see it being embaressing. There is almost always a limitation in any build, perfect balance is very difficult to achieve, and unnecassary. If you are trying to achieve perfect balance, a 5750 might be more appropriate, but for the price difference, a 5770 would be a better investment, especially if you might want to migrate to a new build in the future.
so if i do get it, my cpu won't bottleneck it that much? if it's very minimal, i prolly wont notice it that much then but is the next best option a 5750 or a 4850? The games i have now are Cod 4, both Crysis' and DAO and I'll prolly get like Bioshock 2, MW2, etc. mostly shooters which i don't believe are too CPU Dependant like RTS's
so if i do get it, my cpu won't bottleneck it that much? if it's very minimal, i prolly wont notice it that much then but is the next best option a 5750 or a 4850?
It will be fine. Al PC's have bottleneck. You will notice decreased performance in games that are multi-threaded the most. These run better on quad cores and are starting to be more prevalent. For example Bad Company 2 runs better on a quad core than a dual core.
It will be fine except in games that are CPU demanding. Not all are, but you will find those that just hit it hard. They will play fine, but you will see the CPU utilization cap out or your frames may seem a little lower than that in reviews for your card.