J'ai regardé vite fait les recommandations hardware pour Plex
(Ils ne disent pas pour combien de stream mais je pense que c'est pour un seul) :
Recommended Configuration — transcoding HD Content:
Intel Core 2 Duo processor 2.4 GHz or better
If transcoding for multiple devices, a faster CPU may be required
At least 2GB RAM
Windows XP with SP3, Windows Vista SP2, Windows 7 SP1, Windows 8
Mac OS X Snow Leopard 10.6.3 or later (64-bit)
Ubuntu, Debian, Fedora, CentOS or SuSE Linux
Et comme indiqué plus haut ça mange du CPU :
CPU and Memory Requirements
Generally, any modern PC or Macintosh computer will be able to transcode media for several Apps. Here are some points to consider if you're planning to build a computer to handle transcoding well:
The Server doesn't need tons of RAM to work. This includes Direct Play or Direct Streaming media
Transcoding media is a
highly CPU-intensive process
Source :
https://support.plex.tv/hc/en-us/articles/200375666-Stand-Alone-Server