Your screenshots say the bus is running at 2.5 GT/s, which is PCIe 1.0 speed (the bus will drop its speed down automatically to save power). Have you actually seen it running at a reported 16 GT/s? I suspect HWiNFO is just telling you what the card's maximum capability is, but I don't think it will go beyond 8 GT/s due to both the CPU and the platform being PCIe 3.0.
Even the 10980XE is still PCIe 3.0 / 8 GT/s maximum, according to the Intel specs for it.
Thank you everyone to correct me! 😁 The 4090 RTX paired with 7980XE running very fast.
Compare to Gen 4 x 16 native system like Core i9 12900K almost identical performance.