Graphics card options

[Jake211049]

Hi all, something interesting has come up regarding my build and i would like to get all your advice, due to a convulated issue involving some crap with payments and such rubbish, i have the option with my retailer to either keep my (recently bought) current card at reduced price or part exchange for a new one.
options are: GTX 580 3GB (reduced price), GTX 670 4GB, GTX 680 2GB
the 580 is a gainward phantom, the 670/680 would be stock evga/gainward, offer for the 580 is 40 quid (pounds) off, that puts them all at around the same price
my system has a OC i5 2500k and i game at 2560 x 1600 (30inch), i know at this resolution, vram makes a bigger difference but im not sure how much so im asking for your advice on this, ty.

[quicksilver98]

I would opt for the 670GTX with the 4GB of memory, then OC the heck out of it!

[Holy_COW]

The 670! extra ram would help and slightly oced 670 = 680

I'm still waiting to get my hands on the Asus DCUIITOP 670, but not stock

[thegoatman]

670 is the king of the hill in price/performance.

[Frag Maniac]

I have to agree, go with the GTX 670 4GB. With your setup and given the bench results of the 670 so far, it's a no brainer really. All the better if it's the EVGA vs the Zotac.

[ClockZ]

For you it sounds like 4gb. 670 is a no brainer like everyone else has said.