I just bought a Sapphire R9 280x Dual-X OC, and when I put it on my PC, its is shown like "R9 200 Series" everywhere, and I also can't see the power consumption, even in Radeon Software or in MSI Afterbuner.
I have the latest driver version, so I don't know what's wrong.
My pc specs:
CPU: Ryzen 3 1200
GPU: Sapphire R9 280x Dual-X OC 3gb GDDR5
RAM: 16 Gb 3000mhz
M.B: Gigabyte AB350M-DS3H V2
Can you post an Image of GPU-Z for your GPU card?
Now compare GPU-Z Data with those from TechPowerUp concerning your SapphireDual-X R9-280X GPU Card: https://www.techpowerup.com/gpu-specs/sapphire-dual-x-r9-280x-oc.b2463
The data should be identical. Also check the BIOS Version and then click on the upper Right corner "Look Up" to see if shows the correct GPU card.
Could just be the AMD driver not posting the exact Model.
Here are some screenshoots, they are exactly the same, and I tested it on some games and they run as expected.
A number of different model sapphire cards used the same vbios vers. #, if you bought it used the previous owner may have flashed it to different model spec.
Could be a reason TPU is showing 2 cards ?
You could contact Sapphire tech. support to find out which exact model you have (provided all the I.D. stickers are still on the card).
Not really a big problem, but I wanted to see the gpu power consumption and I can't, just that.