Legit Reviews reports this card doesn't win in all benchmarks against the Radeon HD 6990, which is equally priced.

NVIDIA found a way to take over 2200 components and get them assembled together on a single PCB to create their new flagship GPU called the GeForce GTX 590. The GTX 590 combines the power of two GF110 GPUs on a single graphics card. With a total of two GF110 GPUs packing 1024 CUDA cores and 3GB of GDDR5 memory you know this video card is going to do well in the benchmarks! "It's hard to believe the last dual-GPU video card by NVIDIA was the GeForce GTX 295 and that card was launched way back in January 2009! For more than two years there wasn't an update for this flagship part, but that all changed today with the GeForce GTX 590. To make this dual-GPU beast work the engineers at NVIDIA took the GF110 GPU that is found on the GeForce GTX 580/570 cards and reduced the clock speeds to make a card that was running at 365W. The NVIDIA GeForce GTX 590 is a welcomed addition to the NVIDIA GeForce 500 series of graphics cards and it did prove itself to be faster than the GeForce GTX 580 and is the new flagship video card for NVIDIA! "



Link: Legit Reviews