Hardspell.com says HD 4970 X2 to be 80 percent faster than GTX 280
There is evidence all around for a Crossfire setup of two HD 4870 to be faster than a GTX 280 in several scenarios - a constant benefit of 80 percent seems a little exaggerated though.
According to hardspell.com AMD's Radeon HD 4870 X2 is, on average, about 50 percent faster than Nvidia's GTX 280 - in some applications 80 percent are said to be possible. Even the smaller HD 4850 X2 is said to beat the Geforce flagship.
Since hardspell.com isn't revealing which applications their assumption is based on, it is recommended to wait for further affirmation by other sources.
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