writes "Rumors of AMD's Southern Island family of graphics processors have circulated for some time, though today AMD is officially announcing their latest flagship single-GPU graphics card, the Radeon HD 7970. AMD's new Tahiti GPU is outfitted with 2,048 stream processors with a 925MHz engine clock, featuring AMD's Graphics Core Next architecture, paired to 3GB of GDDR5 memory connected over a 384-bit wide memory bus. And yes, it's crazy fast as you'd expect and supports DX11.1 rendering. In the benchmarks, the new Radeon HD 7970 bests NVIDIA's fastest single GPU GeForce GTX 580 card by a comfortable margin of 15 — 20 percent and can even approach some dual GPU configurations in certain tests."
PC Perspective has a similarly positive writeup
. There are people who will pay $549 for a video card, and others who are just glad that the technology drags along the low-end offerings, too.