Yes, My machine is a monster. With what I do here at Plex, it’s warranted.
I run VMs for tech support (different OS distributions I can spin up instantly).
If you want HEVC, you need the i7-class Skylake (microarchitecture) processor or above to play to those devices which do not support HEVC natively yet. IMHO, avoid HEVC unless you’re using the dedicated player OR able to DirectPlay to the TV.
Of interesting note, the TVS 1282 has 3 video outputs, 1 is 4K capable.
With 4K and H.264, you have some breathing room in the other i7-class machines provided you only transcode a couple streams.
QNAP does make some models in desktop format which you can upgrade the CPU.
In reviewing, the TVS-1282 is the top of the desktop with Skylake. If you want to push beyond that, you’ll want the KabyLake microarchitecture
The TVS-1582 might be of interest as well as the TVS-882.
Specifically, you’re looking for any i7-7700 series (KabyLake). i7-6700 series is SkyLake.
Using the developer-drop PMS 1.6.0 version which has hardware transcoding, The 6700 handles 5 4K H.264 -> 2K H.264 with ease.
FWIW: I am converting 40+ Mbps video -> 20 Mbps in that step. The only CPU involvement, other than shoveling the data, is audio conversion.
I prepare my media for DirectPlay / DirectStream wherever possible. Why transcode the video every time if I don’t need to.
QNAP folks are VERY helpful in product determination. They won’t oversell you either (VERY pleased).
State your needs (they are very aware of PMS), and they will help you. When I was making initial inquiry, their attention to detail made the difference. I’ve since discovered a few bugs in QTS and their responsiveness is, as i said, superb. I’ve had more feedback from QNAP in the 2 months I’ve owned it than I’ve gotten from Synology in the 3 years I’ve owned one.
I’m sure other Qnap & Synology users will correct me where I"m mistaken or have omitted but nothing in the Synology line compares with QNAP’s hardware. QTS 4.3.3 got a huge step up. It’s more ‘tech oriented’ than Synology’s DSM by giving you access to things directly in the GUI.
I hope I’ve helped and not babbled.