what do you think is the difference between sessions and transcodes?
how many simultaneous users/transcodes do you expect ?
intel gpu have no built-in limit, but will certainly run out of resources sooner or later, how many depending on the codecs and resolutions involved.
I believe that others have mentioned 10+ transcodes on intel 630 gpu.
consumer nvidia cards have 2 or 3 ENcoding limit, but that can be removed with a driver hack. GitHub - keylase/nvidia-patch: This patch removes restriction on maximum number of simultaneous NVENC video encoding sessions imposed by Nvidia to consumer-grade GPUs.
nvidia cards are more limited by the video ram. 4k transcodes take about ~1.4 gig of video ram, per transcode.
see also @ nVidia Hardware Transcoding Calculator for Plex Estimates
if you are intending on transcoding 4k, please read entire thread @ Plex, 4k, transcoding, and you
