Feature Set H are capable of hardware-accelerated decoding of 8192x8192 (8k resolution) H.265/HEVC video streams
The eighth generation PureVideo HD
The eighth generation of PureVideo HD, introduced with the GeForce GTX 1080, GTX 1070, GTX 1060, GTX 1050 Ti & GTX 1050, GT 1030 a Pascal (microarchitecture) GPU, adds full hardware-decode of HEVC Main12 profile to the GPU's video-engine.
Previous Maxwell GM200/GM204 GPUs implemented HEVC playback using a hybrid decoding solution, which involved both the host-CPU and the GPU's GPGPU array. The hybrid implementation is significantly slower than the dedicated hardware in VP8's video-engine.
The eighth generation PureVideo HD is sometimes called "PureVideo HD 8" or "VP8", although this is not an official Nvidia designation. This generation of PureVideo HD corresponds to Nvidia Feature Set H (or "VDPAU Feature Set H").