Originally Posted by Dr.GumbyM.D.
The one arguement I haven't seen in this thread is that you're going to likely bottleneck games with your CPU (especially Battlefield games) before you notice the performance difference of either of these cards.
This is a great comment and definitely some food for thought. Having chew on it for a bit - I have some thoughts on the reason this may not have come up:
1) His CPU, while being a bit on the dated side - should rarely become a noticeable bottle neck with the exception of specific games. Many people prefer a beastly OC'd quadcore if you are stuck on LGA775 - but the majority of games (definitely NOT saying all games - just the majority) that are currently on the market don't seem to be quad core aware, mostly (very rapidly becoming "basically always") dual core aware though. Obviously this is a weak argument because if the OP is getting a top-tier graphics card, it should be assumed OP is playing both current games, as well as has plans of future games with the card.
2) The resolution that OP is gaming on should give him such amazing performance in all games under the sun that even if the CPU is "holding back potential frames" - the amount of fps that OP should expect is well above 3x the ability of even the most well trained humans to detect - and should be far more frames than OP's screen could ever hope to display per second.
Even with those two considerations - I still feel the quoted thought from GumbyM is worth some thought time - especially if anyone missed it among the other comments. OP will most likely keep this card through an eventual PC upgrade - and as such there is a likelyhood that additional frames can be achieved through this upgrade. Even though the fps increase will only be noticeable in things like benchmarks and the like, and will never be able to make their way to OP's eyes (because of the previously mentioned issues) - it is still enjoyable to see higher FPS on ""paper" even if you don't get it to your eyes.
Going along side this same line of thought - OP may one day decide that their resolution is, in today's gaming and pc world - exceptionally small. With a screen that supports a higher resolution, the CPU bottleneck may show itself in an increased number of situations - and in that situation I imagine there would be more calls for a faster CPU.
Sorry if that was a bit long winded - but I wanted to make sure to cover everything I felt pertained to this side-thread of thought.
Reference the rest of the comments on which card to go with --- I think its safe to say, that no matter what you decide you should find yourself extremely pleased with your decision. This is a situation where there really isn't a "bad" choice~