I bought 3 new Dell XPS-8910 desktops in December. I bought when the only specs available were for the REAL AMD Radeon RX-560 2 GB card. I haven't felt video was delivering the way it should/I expected and started digging. I think I was sold 1 product (STRIPPED DOWN VERSION) when available specs told a different story. How did I not get taken for a ride and what are my options? I've never embraced AMD, never owned a processor. This could seal the deal. Color me, ... REAL DISAPPOINTED.
Download GPU-z and see what it indicates for all your AMD GPU cards.
AMD is not responsible for what others install in their computers for sale.
You need to go to the place of Purchase and ask your question if you find out the AMD GPU cards are not what you expected. Where did you purchase the Dell Desktops? was it from Amazon Marketplace or Ebay or something similar or a local store?