I wish some well known website would dispel the misconceptions about VRAM. More VRAM is not about more performance. It is about more anti aliasing. More modding. Now at a certain point you will need more VRAM, but with 3GB cards you will be fine at 4k. Most people hitting VRAM issues are using too much special anti aliasing such as OGSSAA, BF4's resolution scale (same as OGSSAA), SSAA, or SGSSAA. If you go stupid with SSAA you will not only chop your performance by 50-75%, you will double to quadruple your VRAM use for no good reason. Other than anti aliasing.
Even with 2GB of VRAM, you can play surround 5760x1200 and never have a VRAM problem. Ever. If you have a VRAM issue, it's because you're using overkill AA or too many mods.
But yeah. More VRAM doesn't make your card faster. I'd like to say that eventually people will realize this, but I think AIB vendors want to sell more cards with more VRAM for profit so there's no compelling reason for them to spell out what more VRAM is for. This of course allows them to sell 4GB GTX 770 cards to suckers who think that it will benefit them at 1080p. Yeah, 4GB at 1080..........................waste of money. Unfortunately, there are a lot of suckers out there that think "oh hey more VRAM means more frames!" which obviously is NOT true. You can view a plethora of 2 vs 4 GB GTX 680 reviews, or 3 vs 6 GB 780 reviews and see this. The only thing which will add performance is higher clocks for the core, VRAM on the same card. More VRAM? Same performance. More anti aliasing. More modding. And that's about it. Again, at a certain point more VRAM becomes desirable but you'd have to use an absurdly high surround resolution for that to come into play past 3GB. Perhaps 7680x1440/1600. I'd say 6GB makes sense there.
The sad thing is that the "next gen" consoles are so weak that we are using more VRAM for anti aliasing in PC games than we are for assets. This was not the case with prior generations. But when the next gen can barely push 720 or 900p at 30 fps, then yeah, we get slightly improved PC ports in which we can go nuts with SSAA. And then we'll feel better about hitting a VRAM wall because we're using 4GB-6GB of VRAM solely for more anti aliasing. Good times.
