new ati HD 6990

• Harnessing the incredible power of dual second-generation DirectX® 11-capable GPUs, the AMD Radeon HD™ 6990 is quite simply the fastest graphics card in the world.⁶
• Featuring 4GB of high-speed GDDR5 memory, the AMD Radeon™ HD 6990 is the definitive solution for ultra-high resolution gaming across up to six simultaneous displays.¹
• Break barriers. Crush records. Flip the Unlocking Switch and take your AMD Radeon™ HD 6990 beyond the bleeding edge.⁸
• Higher clocks. Faster gaming. Devastatingly intelligent power management. That’s AMD PowerTune technology on the AMD Radeon™ HD 6990.

source:
http://www.amd.com/us/products/desktop/graphics/amd-radeon-hd-6000/hd-6990/Pages/amd-radeon-hd-6990-overview.aspx#3