This card receives Overclock3D's Performance award. It's not quite as fast as the Radeon HD 6990, but reasonable cool and quiet. The biggest downside is the high price of course.

"Putting two GPUs onto a single circuit board is a fairly recent trend for the highest models in a particular graphics card series. Although it had been tested before with varying success it was the GTX295 and ATI HD4870X2 that really proved it was both possible and beneficial to go for SLI/Crossfire but on a single card. Of course the primary benefit is that you can buy two, and go for a Quad-GPU setup, but there are also energy savings over having two single cards. Heat however is the largest hurdle to overcome. This has been dealt with either by reducing the performance of the GPUs used, or resorting to something that sounds like a 747 taking off. "



Link: Overclock3D