except in situations where 1GB VRAM is a bottleneck (which is increasingly common)
Could you elaborate on the bottleneck? I think I recall Skyrim with mods being a huge example of bottleneck, apparently the FPS drops low or something? And another game I heard about where you couldn't even adjust certain settings with 1 GB VRAM, it was was more than just being slow, it just wouldn't work on certain settings because of huge textures?
Also, I'm confused about what happens when you switch to eyefinity? From what I understand, memory constraint really becomes important when you have anti-aliasing.
But, without anti-aliasing, if you can fit all the textures in 1 GB of VRAM, why would the card care whether you displayed them on 3 monitors or 1? I'm not quite certain how eyefinity increases the demand for VRAM, or if it is a simple multiplication of raw pixels (e.g., if you take 0.5 GB of VRAM at 1080p, then you'd need 1.5 GB of VRAM at eyefinity 3x1080p?)?