Yes, with regards to performance, Nvidia GeForce GTX 980 Ti outperforms, Radeon RX 5500 XT by 19.3% in 3Dmark benchmark.
When it comes to power efficiency, GTX 980 Ti falls behind with an efficiency score that is 23, lower than that of RX 5500 XT 37. Consuming 130 watts, RX 5500 XT has 60.9% better power consumption to performance ratio. The efficiency score is calculated by comparing the benchmark score with power consumption
GTX 980 Ti price to performance rating is lower than RX 5500 XT's. RX 5500 XT offers 414.3% better value fo money.