Maximum PC: AMD's Radeon R9 290 graphics card already runs fast, but kicking things up a notch is Sapphire, which just launched its R9 290 Vapor-X OC with a custom cooling solution. It has 2,560 Stream Processors, 4GB of GDDR5 memory running at 1,400MHz (5.6GB/s effective), and an overclocked GPU that's been goosed to 1,030MHz, up from a maximum clockspeed of 947MHz on reference cards.
