Actually I would be very careful of this characterization. Plex MAY end up supporting a Libva (intel driver) > Mesa > Nvidia driver option for Nvidia support. Plex doesn't want to do throwaway work, but if they can interface through a common platform api (mesa) then that is a different discussion.
That will likely be in 2018 (if it happens) as Intel is scheduled to release Libva 2.1 (which Plex needs) around Dec. 22nd. Until Plex has that, everything is at a stand still due to code fixes they need in LibVA.
Now whether the GPU would be exposed enough through QTS for Plex to take advantage of this or not I have no idea. That would be likely be discussions between Plex & QNAP.
Either way for the x77 family it really is irrelevant as the CPU has plenty of horsepower to handle SW transcoding against multiple streams.
Yeah! Libva 2.1! That's what Plex was talking about.
Anyway, like you said, that's why I shelled out the big bucks for a x77. The CPU is barely breaking a sweat with 3 streams going at once. So it definitely has more than enough horsepower for what I'm using it for.
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