GPU for 4k Transcoding in Jellyfin

cross-posted from: https://lemmy.world/post/1622687

I'm starting to get more and more HDR content, and I'm noticing an issue with my Jellyfin server. In nearly all cases, it's required to transcode and tone map the HDR content. All of it is in 4k.

My little Quadro P400 just can't keep up. Encoder and decoder usage hovers around 15-17%, but the GPU core usage is pinned at 100% the entire time, and my framerate doesn't exceed 19fps, which makes the video skip so badly it's unwatchable.

What's a reasonable upgrade? I'm thinking about the P4000, but that might be excessive. Also, it needs to fit in a low-profile slot.