How often does a mid end card have the power to use 2gigabytes of memory? Skyrim high rez pack would be about it.
I remember seeing geforce FX 5200's with 256megabytes of ram. Not that they could ever use it.
Truly depends. I mean if you don't have the funds to buy your 7850.7950 or 7970 with more then 1 gig of ram surely when you run into a game with more then 1 gig of ram usage you will hit a brick wall. However at the same time you won't be getting higher then high in some areas and medium in most with a 7750.