On hindsight, one of the wisest decisions AMD ever made was acquiring ATI Technologies, a costly and controversial move at the time, but one in which the Santa Clara chip designer has been kicking ass with ever since. This point is underscored with AMD's Radeon HD 7000 series (see our Radeon HD 7970 preview here), a killer GPU family that will culminate with the Radeon HD 7990, a monster of a card with two 7970 GPUs and 6GB of total graphics memory.
Unless something terribly unexpected happens, like a manufacturing defect of epic proportions, we have every reason to expect this dual-GPU card will tear it up in benchmarks. We won't know for sure until we get our hands on one, of course, nor will you be able to see for yourself until it ships. According to news and rumor site Fudzilla, the HD 7990 is slated for retail in March 2012.
If plan to purchase this card, start saving now. Fudzilla says it will cost $849, not exactly chump change, but not egregious considering it's two Radeon 7970 cards, which sell for $549 each.
There's also power considerations to contend with, and towards that end, an intriguing feature in the 7990 is AMD's ZeroCore Power Technology, which powers down the GPU to virtually a zero state when the monitor is idle.