Remember a Laptop 5080 does NOT have even close to the performance of a 5080 discrete card.
The Laptop 5080 GPU is closer to a 4070 discrete card.
Source
https://www.videocardbenchmark.net/high_end_gpus.html
Ya, so much for truth in advertising. I once bought a set of bluetooth speakers that advertised 20 watts per channel that came with a PSU that had an output of 17 watts. My guess is the design must have been 100% efficient and that the other 23 watts came from flux capacitors.