techPowerUp posted a review on the Powercolor HD 7990 Devil 13 6 GB graphics card
AMD has been working on a dual-GPU HD 7990 card for a long time, but we are still waiting for a release. PowerColor has taken on the challenge and engineered a working HD 7990 by themselves, without any help from AMD.Powercolor HD 7990 Devil 13 6 GB Review
The PowerColor Devil 13 is the company's flagship limited edition hardcore enthusiast card. It uses two Tahiti XT GPUs running at HD 7970 GPU speeds of 925 MHz GPU and 1375 MHz memory. To enable an extra clock boost, a turbo button has been added which takes the GPU clock to 1000 MHz.
Cooling for this immensely powerful card is provided by a custom triple slot, triple fan cooler which covers the whole card. Pricing of the PowerColor Devil 13 is $999, with limited volume available.