I recently bought x2 RX480 GamingX 8Gigs. I installed the drivers, enabled crossfire mode in "Radeon Settings" and enabled monitoring on the GPU's.
I've been playing games and running benchmark tests (Catzilla) to see the difference - and I'm failing to see it.
With x1 GPU, I run Catzilla in 1080p and get a score of 5000 (example). Then I add the second GPU, re-run the benchmark and get a score of 4500.
The monitoring tool tells me the 2nd GPU is not been used to help in performance.
Is there a guide on how to setup Crossfire for RX480? What else do i need to do to test and make sure everything is configured. There is no official guide on how to do so, really disappointing so far.