Yes, with regards to performance, Nvidia GeForce RTX 4080 outperforms, Radeon RX 5500 XT by 477.8% in 3Dmark benchmark.
The RTX 4080 is more energy-efficient considering its performance, having power consumption of 320 watts and a 3DMark score of 28063. By comparing its benchmark score to its power consumption, we get an efficiency score of 88. RX 5500 XT's efficiency score is 37 .So RTX 4080 leads by 137.8%, making it the smarter choice in terms of power consumption.
RTX 4080 price to performance rating is lower than RX 5500 XT's. RX 5500 XT offers 50.0% better value fo money.