Dicehunter
Resident Newb
One thing that I've heard is that they wanted to have a lot of room between GPUs when they're used in SLI. Backplates installed reduce airflow, but I personally don't think it would be too restrictive.
The most popular SLI config is 2 way which means you can always have at least 1 space between your cards for airflow.
There'll be a logical reason behind it I suppose but the airflow one surely can't be it.
Wait to see what AMD has in their pocket.
AMD will need to be at least 50% faster than the 290X to be competitive with the 980 Ti and Titan X and then there's the pricing which they badly need to be competitive on especially considering the 980 *non Ti* price drop.