swifty_morgan :
well cpu expert................... vram has very little to do with how many fps any given machine gets.......... (*). it has more to do with the processor (cpu ) and the processor on your gpu................. the extra vram does however (*) allow sustainably higher frame rates at higher resolution at higher settings without hesitations/hitching/frame dips/stutter, etc. whereas the 2gig card will under certain circumstances. I will also say, if buying a card now and planning on having it for a while, and using a high resolution monitor, you'd be a nut not to look out for yourself. thanks for the links but all they ever do is show fps counts. they never tell you how low the fps dip, and the reviewer who does those automated benchmarks has no idea if the game plays smoothly or not........... not because he's too lazy to sit behind the machine and play, but because it's easier to do because of the time involved. most of them are extremely flawed because of this........... and then you have to look at the reviewer and what his stake is in the matter ($$$$$).. don't bite the hand that feeds you. ever see those linus vids, the guy never says the card sucks because the frames drop........... ($$$$$) he kisses ass like the pros.
Well if you are suggesting that reviewers are writing biased reviews for the money that may well be, but if that is the case, it makes little sense that they would write a review that says DONT buy the more expensive card.
Every objective test has shown over and over again that the 770 at 2 GB runs exactly the same as the 770 at 4GB at any reasonable resolution. By the time you hit a point where the VRAM makes a difference (very high resolutions) it makes no difference anymore because the 770, even in SLI, can't handle it to begin with. And thats the main problem with the 4GB model. Yes obviously there are situations where 4GB can all be used but the resolutions required to hit that are beyond the capabilities of that GPU. Which raises another point, you mention future proofing, but if that is your concern why are we looking at a mid range card in the first place?
Regardless, Ive said enough of this topic. If despite every measurable test showing it makes no difference you still want to pay the extra money thats your perogative of course.