Maximum PC: For a brief time yesterday, we noticed that Newegg had the MSI Radeon HD 7990 (R7990-6GD5) dual-GPU graphics card on sale for $550 after a $30 rebate card. The price has since gone back up to $890, but there are still a few deals to be found, and perhaps more on the way. That's pretty impressive when you consider these cards were hovering around $1,000 just a little while ago.
whatswithjeff.com: AMD’s flagship graphics card featuring dual-GPU, AMD Radeon HD 7990, gets a major price drop from its original MSRP of $1000, down to $699, more or less. The news was actually announced a couple of days ago by AMD, and if you haven’t been visiting online stores lately, you would be surprise that its price sits somewhere near a GTX 780, but offers more performance. See where you can buy the best 7990 deals below."
wow, that's cheap!