Power, Temperature and Noise
The biggest difference between performance-comparable GeForce and Radeon cards tends to be power consumption. Even though 12nm is at the helm, the need to elevate the core clock causes the RX 590 to chew through a significant amount of power - more than an overclocked RTX 2080, actually. Again, there's no way around it until the next-generation architecture surfaces.
Temperature is high and the noise is louder than any GeForce on test. The fans spin up at 2,000rpm after five minutes. Though the cooler is reasonably capable, it is having to deal with RTX 2080-like power, and that requires a more substantial, dearer heatsink design.
