I just bought RX 590, but it may takes few days to get it.
So I ask it first, dose RX 590 work on macOS? Hackintosh or e-gpu for Mac.
I have a hackintosh PC and a MacBook Pro, I wonder if RX 590 works well with them.
Need to see if Apple has new drivers for that AMD new GPU card for the Mac OS. If Apple has drivers than your RX 590 should work. You can also see if the RX 580 Apple Driver is compatible with the new RX 590. If it isn't then you will need to wait until APPLE or someone else creates a driver for the RX 590.
These are the only Mac drivers AMD has : AMD Drivers and Support for Radeon, Radeon Pro, FirePro, APU, CPU, Ryzen, desktops, laptops