It actually can beat x264 -fast. Archival or storage encoding, however, it's all about x265 (or even x264 if you need H.264 for some reason). This is how it will be for years, as hardware encoders by ...
Back during the GTX680 launch (March 2012), Anandtech ran a few tests with the only compatible software available, Cyberlink Mediaespresso. Testing against Intel-Qucksync, Anand found NVENC to be ...