Software CrossFire Tested with Catalyst 6.11 Drivers
 

"It wasn’t too long ago that ATI/AMD released the latest set of drivers for their product line. We have come to expect these updates on a very regular basis, but the month of November brought a new twist to the driver set; software CrossFire support. While this was already showing itself as a huge step in the right direction, ATI went a step further and negated the requirement for a CrossFire Master Card. Now it was possible to utilize the CrossFire technology without having to purchase an impossible to find Master Card. There are a few caveats to the new drivers, but it is still a definite improvement in past CrossFire requirements."

http://www.tweaktown.com/articles/1000/