I have a NAS with 2.2GHz quad-core, 8GB RAM running plex.

So far my record was 7 simultaneous remote streams (I think 2 were transcodes, the rest direct play), which it handled fine. And going by CPU usage, it should be able to handle 5 transcoding sessions (1080p max) at once.

Though, I usually run into bandwidth limits before I run into CPU limits (Hopefully I get fibre this year).

Honeslty,