Nvidia has confirmed to us that RTX 5080 production was affected.

It's official—following the first user report of a GeForce RTX 5080 to display missing ROPs in the popular GPU-Z utility, NVIDIA has confirmed that it too is affected by a rare 'production anomaly'

Not all Nvidia GeForce RTX 5080 graphics cards are equal, as the firm admits that some of them have fewer ROPs and slower game performance.