What site did you use to purchase it?
To verify authenticity
- You could look at the serial number and verify with ASRock customer service.
- Also GPU-Z can identify the card and show what VBios is installed.
I would install the GPU drivers from AMD and go to the performance tab, tuning, select custom and turn off zero rpm mode. Then I would run benchmarks, like the free ones available in the free version of 3DMark, and compare to others results with the same GPU.
My Gigabyte RX 6800 XT Gaming OC box seemed to be a little lower quality than previous GPU I have purchased and I verified with Gigabyte that it is authentic by doing the above.
Ryzen 7 7700X, MSI MAG X670E Tomahawk Wifi, Corsair DOMINATOR® TITANIUM RGB 2x16GB DDR5 DRAM 6000MT/s CL30, Sapphire Pulse AMD Radeon RX 7900 XTX, Corsair HX Series™ HX1000, Corsair MP600 PRO NH 4TB