HD 6990 and GTX 590 are very close in performance sits in a position where it is hard to name a real winner. ASUS intended to change that with MARS II, but PowerColor has its own concept solution coming to counter the threat from ASUS.
The rumours of custom PowerColor Radeon VII GPUs are false
AMD has updated their RX580 to the 12nm FinFET process. Let's see how the PowerColor Red Devil copes with these enhancements.
PowerColor Red Devil Radeon RX 480 offers decent performance and is a good candidate for affordable VR Ready performance from the red camp.