Excerpt: As our third retail HD 5870 rolled into the labs it was time to check out CrossFire X. Some may wonder what CrossFire X is. Well, it's like CrossFire, but with an X. On a serious note, though, in a single GPU setup it means we're going to be dealing with three cards today. If you're packing a dual GPU setup it tends to mean you're dealing with four GPUs which is something we intend to attack when the HD 5870 X2 shows up on our door step.