JLMS2010
I have the Asus 144MHz 1080p monitor and don't have any problems with VRAM.  3GB should be plenty

EVGATech_MattT

40Water
Hmm okay, have a feeling games like Titanfall might challenge the vram a bit @ 3GB
 
Is there a chart somewhere that shows how much video ram modern games need @ certain resolutions?

I can confirm that Titanfall at 1080p at max settings uses over 3050MB of VRAM on my 780. It runs smooth but if everything is max it uses all of the ram almost. If you lower the settings though from insane to high it drops significantly and doesn't look different, at least to me.

rjohnson11
There are very few games right now that use over 3GB of memory. You should only consider a 6GB card if you want to run a much higher resolution monitor or high resolution multi-monitor

Azzazel99
780's will run outta power long before they can come anywhere close to using 6gb vram making it pointless. The 4gb 770 and 760 dont have enough juice to use up their vram. They simply run out of processing power before they can reach their vram max. Honestly same is with the 3gb cards I mean there is a reason the 780ti beats the 290x(4gb) in every single test even at 4k. The extra 4gb vram just isnt used. Can a select few game/games come close to using 3gb? I havent seen anything come close to maxing my 780ti classifieds so I'd say not really. The 6gb card IMO would be a waste and not worth waiting on for gaming.