Palit Radeon HD 4870 X2 Video Card Review
 

Palit's card isn't available online as of yet, but as ATI's card just launched this past Tuesday, it should hit retail stores at a price of $549. At this price point it is the highest priced card for gaming enthusiasts but you get the performance of two HD4870s on a single card, making it the fastest single card on the market. When NVIDIA launched their GeForce GTX 280 card it was the fastest, but it wasn't so fast that two of the competition chips couldn't beat it. This has caused NVIDIA to drastically lower the prices of their GTX280 and GTX260 cards to reflect the performance and price you would expect. Competition is a good thing, as you get better performance, more features and lower prices because of it. This is a Gamers Gold card as it is the top of its class for a single GPU solution.

http://www.gamepyre.com/hardwared.html?aid=1007&p=1