[akaij]

My guess would be video encoding/decoding and rendering.

[shellwizard]

Some Intel and AMD CPU come with an iGPU that you can use to transcode videos even some Xeons, there's no need to add a GPU just for that

[einsteinx2]

A lot of them don’t though. My Xeon doesn’t, so I threw a cheap used Nvidia Tesla P40 in there to do the job. Also it can handle a lot more simultaneous streams than any iGPU I’m aware of.