It's not about "enough." We keep these GPU's for more than a day. A part of the reason I buy AMD is because I like high-res setups. I hit the VRAM wall with my 6970's at 2560x1440. I hit it now with my 7970's at 7680x1440. Usually I hit the VRAM wall before the performance wall.
10/30/14 at 7:50pm