Sapphire TOXIC 7970 GHz 6GB Graphics Card Review @ HardwareHeaven.com
 

One of the first manufacturers to get a 7970 GHz Edition to market is Sapphire and they haven't held back on their Toxic version. With 6GB of memory, custom cooler, redesigned PCB, improved build quality and a heavy overclock this is about as extreme as a 7970 gets.

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