Quote:
Originally Posted by nevcairiel
I would be surprised if single-stream encoding performance increases on those cards with multiple NVENC engines, but since they are rather expensive, I can't really confirm or deny it officially.
|
That's validated here. Interesting that some GPUs have multiple NVENC modules:
https://docs.nvidia.com/video-techno...nc-performance
Quote:
|
While Kepler and first-generation Maxwell GPUs had one NVENC engine per chip, certain variants of the second-generation Maxwell, Pascal and Volta GPUs have two/three NVENC engines per chip. This increases the aggregate encoder performance of the GPU. NVIDIA driver takes care of load balancing among multiple NVENC engines on the chip, so that applications don’t require any special code to take advantage of multiple encoders and automatically benefit from higher encoder capacity on higher-end GPU hardware. The encode performance listed in Table 3 is given per NVENC engine. Thus, if the GPU has 2 NVENCs (e.g. GP104, GM204), multiply the corresponding number in Table 3 by the number of NVENCs per chip to get aggregate maximum performance (applicable only when running multiple simultaneous encode sessions). Note that performance with single encoding session cannot exceed performance per NVENC, regardless of the number of NVENCs present on the GPU.
|
I imagine the scenario is for things like recording game activity and webcam simultaneously, or perhaps encoding multiple bitrates at once for adaptive streaming.