Legit Reviews posted a preview on the ATI CrossFireX platform
In March, ATI will be releasing CATALYST 8.3 drivers, which now offer support for CrossFireX in both DirectX 9 and DirectX 10 applications. For now only the Radeon HD 3800 series of video cards will support 3-way or 4-way CrossFire in compatible PCs. ATI has stated in the open that performance still has a ways to go and that over the next few months performance is only going to get better. The driver team at ATI is cranking away on CrossFireX and as you will see in this article they are off to a great start...ATI CrossFireX Preview - Triple CrossFire Benchmarking
