VRAM isn't just used as a frame buffer (which is proportional in size to screen resolution), it also provides fast access to textures, and likely other things.
That's memory clock speed and bandwidth, not the actual amount of ram.
http://www.tomshardware.com/reviews/...-2,1292-7.html
Last edited by Nick2.1; 01-26-2012 at 05:55 PM. Reason: More shit.
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