It's easier to do that than create new architecture every generation.
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Yes the new GTX 680 is super fast but, its time to wait and re-think
The 2nd model is on the way and is still a "Single GPU" with 4gb DDR5
[EVGA] GTX 680 4GB FTW
http://eu.evga.com/articles/00669/#GTX680FTW
http://media.bestofmicro.com/Q/U/331...l/wow 5760.png
It seems dual GPU is supported in the x64 bit version, but only makes a difference on the nVidia cards
in fact a single GTX 680 is just as good as crossfire 7970, but as a funny note, it seems that the AMD cards
does not scale at all. So since I know WoW is a nVidia supported game, perhaps that x64 bit platform came in to support SLI ?