RTX 2080 vs RX 6400

Yes, with regards to performance, Nvidia GeForce RTX 2080 outperforms, Radeon RX 6400 by 206.3%.

When it comes to power efficiency, RTX 2080 falls behind with an efficiency score that is 44.4, -35.1% lower than that of RX 6400 68.3. Consuming 53 watts, RX 6400 has better power consumption to peformance ratio. The efficiency score is calculated by comparing the benchmark score with power consumption

RTX 2080 price to performance rating is lower than RX 6400's by -16.7%. Here is more in depth overview of the price and used prices of RTX 2080 Price History and RX 6400 Price History