Note: Elgato has a great new capture device called 4K S. The name is similar to the 4K60 S+, but they are very different products. Find out more about the 4K S here.
Elgato Game Capture 4K60 S+ features an on-board hardware encoder which provides the following encoding options.
Up to 200Mbps at 2160p (4K) 60fps AVC/H.264 (SDR recording).
Up to 140Mbps at 2160p (4K) 60fps HEVC/H.265 (HDR recording).