What is hardware qsv in streamlabs obs?

For example, if you have such high CPU usage that your PC is slow then there is a setting in OBS called Hardware (NVENC), Hardware (VCE) or Hardware (QSV) within Settings > Output > Streaming. QSV got better, but the current generation of Nvenc on the 1000 series GPUs is the best hardware encoder you can get at the moment. The question we all want to know is: What encoder and which encoder setting should I use for streaming/for recording? and: If I use a hardware. Streamlabs- codec QSV Intel Quick Sync Video- streaming Full hd 60. OBS : QSV X H264 X NVENC - BEST STREAM ENCODER - MELHORA A TUA. x264 vs QSV - My experience and experiment.