The poor man's 1u inference GPU – MSI GTX 1050Ti 4G OC
projectable.meI'd think he'd want some ducting on that fan; maybe a bit of foam on either side of the GPU, to help force air through the heatsink.
Too bad there isn't a stable version of Plex with GPU transcoding. (It's beta right now). I would love to do this on my 1U short depth PMS server enclosure.
Plex just uses ffmpeg, the version bundled does include GPU support although I believe it depends on the codec, from memory it does x264 but not x265 or vp9 but I could be wrong.
I realise this is a budget build, but replacing the thermal compound while doing this certainly wouldn't hurt. Re-using it feels wrong.