I dont think R9-480X is gonna be double my R7970.

But if they Have the same power consumption drop as nVidia, I'll be glad w/ 1 GFX Card taking up a Single 6 or 8 Pin Connector.

Less heat the better.

w/ DX12 Explicit Multi-Adapter, XFire and SLi is dead from DX12 Onward. (Vulkan uses Similar Underlying tech).

Also helps as AMD as I said before can slap 2,4,,6 or however many GPU's on a Interposer and DX12 will pool them into ONE GPU, and not have to worry about XFire Drivers/Profiles.

So DX12 Sees One GPU Pooled, But Each GPU will have it's own resources on die (Compute Engines, Command Processors, Schedulers etc).

4 Schedulers, Compute Engines and Command Processors Maintaining 1500SP's each is better than 1 Scheduler/Command Processor/Compute Engine trying to drive 6000SP's by itself.

Especially in Multiple Viewport Renderers (ie VR), and Engines that allow Unlinked Explicit Multi-Adapter.