Originally Posted by kaffis
Namely, if what you mean to say is "for single-card setups, the manufacturers of the graphics cards generally don't saddle a GPU with less RAM than it needs to keep up," I tend to agree.
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Pretty much.
More video RAM means that, say, a mid-range card could use higher texture resolutions than an equally fast card with less RAM.
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But if the GPU does not have the horsepower to render those textures at a smooth 30+ fps, then loading them into RAM is a wasted effort.