GTX 1660 vs RX 5500 XT

Yes, with regards to performance, Nvidia GeForce GTX 1660 outperforms, Radeon RX 5500 XT by 12.3%.

The GTX 1660 is more energy-efficient considering its peformance, consuming 120 watts to produce 3DMark score of 5454. By comparing its benchmark score to its power consumption, we get an efficiency score of 45.5. RX 5500 XT's efficiency score is 37.4, 21.6% lower, making GTX 1660 the smarter choice in terms of power consumption.

GTX 1660 price to performance rating is lower than RX 5500 XT's by -63.6%. Here is more in depth overview of the price and used prices of GTX 1660 Price History and RX 5500 XT Price History