AMD's much anticipated Radeon HD 6990 made a brief public appearance this weekend in a demo by the company's graphics team manager Matt Skynner. The executive whipped out the card while discussing the company’s APU technology, and while no actual details were revealed of the product itself, Japanese site 4gamer managed to get are legitimate, the graphics card will integrate 3840 stream processors and have 4GB of GDDR5 memory clocked at 4.80GHz. That’s a significant leap from the previous-generation Radeon HD 5970's 3,200 stream processors and 2GB of RAM. Pricing info is not yet known but it's likely the Radeon HD 6990 will go over $500, which is the price tag of Nvidia's flagship card, the single-GPU GeForce GTX 580.