AMD's next flagship graphics card was only announced a few hours ago, and it won't arrive on the gaming public's plate until January, but already the tech punditry has tasted it, tested it and spat out a soggy little piece of paper that reads: "the fastest single-GPU card in the world." What we're really looking for, though, is the type of performance that beats older rivals like NVIDIA's GeForce GTX 580 without blowing the house up like a
