AMD announces next-gen Radeon HD 7970 for $549

A fresh contender for your blow-out 2012 Olympic gaming rig: AMD's first 28nm GPU, the Radeon HD 7970. It's scheduled to arrive on January 9th, priced at $549 -- nearly $200 more than its direct ancestor, the 6970. Then again, this newcomer packs some supremely athletic specs, including a 925MHz engine clock that can be readily OC'd to 1.1GHz, 2,048 stream processors and an uncommonly muscular 384-bit memory bus serving 3GB of GDDR5