SLI/Crossfire scaling in ARR?

[ispano]

using a 690 or similar card that has 2 GPU on one card isn't the same as using 2 separate cards. It is still treated as a single card configuration.

No, it's treated as 2 cards. I have 2 5970s, and in Windows it looks like 4 cards. In the past this was somewhat correct, there were dual GPU cards in the Voodoo3/4/5 era that looked like single cards. But all current ones are basically two cards on a single board. They still however look like 2 Cards to the system. XFire/SLI is just done internally.