Intel NUC j3455, the plex server I have been waiting for?

JeffMD

Platinum Member
Feb 15, 2002
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So I have been playing with plex for a while on one of my older PCs but it could never really get off the ground for me because the PC was bulky and powering it 24/7 was just unwieldly. It had a fine cpu in it but nothing about it was low power and it would warm up a room after several hours. I wanted to go to a mini pc like config but at the time the only ones with ideal passmarks were expensive and base on intel core processors. Recently when researching NAS devices to investigate plex feasibility I came across the celeron j3455. Based on sky lake, a true quadcore that runs at a measly 10 watts but still manages to hit 2k passmark, one of the hallmarks of a cpu that can take on 1080p transcoding. It really was the cpu I had been waiting for, and it could be had in intel's newest line of NUCs for the dirt cheap price of $129! So I looked up some research to make sure it wasn't crippled by something and made the purchase. I paired it up with 4gb and while I was thinking I could probably get away with one of my older mechanical hard drives, last minute made me switch it up with a 250gb SSD I wasn't using.

So installation went without a hitch, the HD installation is one of the most painless I have experienced which is a big change from the MSI Cubi who'se wrapped sata cable required so much pressure on the header "lego" to snap in that I damaged it and now the HD doesnt show up if kinked at certain angles (m.2 available if the cable dies and can't be replaced thankfully) . Intel was actually smart enough to provide a one download package with all current software for this NUC version so getting up an running was painless.. although a little slow. The multi-core encode benchmarks may not lie and the newest acceleration methods means your online video streams will never lag, but when it comes to zippng through windows install, drivers, apps... it feels like a $129 computer... on an SSD.

I definitely notice this in plex. After initial setup and figuring out once again how to installed the absolute series scanner again I hooked up my anime fansub drives and poured it all in one go (btw all my video will be on these usb 3 drives. Did not intend to store much on the internal drive). My collection is about %90 auto-matched after which I had to spend a couple hours matching the rest. The scan itself didn't seem to take any longer then on my other computer, but things were a little different after things were loaded. I have 370 anime series, so the UI through the web browser really beats on that processor and you will definitely see it. Thankfully I have no plans to use it after initial setup as the plex server will be headless and adding stuff can be done externally.

So, now I can't vouche for long term stability yet, but it is now headless and has had little problem with streaming and transcoding what I need to my roku express (just happens to be what is in the bedroom). I can't seem to find the tick box any more that lets me see in the log files the transcode coefficent index (ie how much lower or faster then realtime it is able to work) and I don't see anything about it in searches so it seems to have gone the way of the dodo, however one of my series is a 10mbit 1080p and it had no buffer pauses in the 24 minute episode. I will definitely be giving it a work out this up coming week when all my content is online and organised.

Also a little about heat and noise, the NUC actually has a design flaw where the fan can only sense the temp from 2 motherboard sensor, one is on the voltage regulators and the other is on the far edge of the mobo ideal for case temps. So it is quite awful at actually being a cpu fan, luckly unless you are running prime95 it shouldn't overheat. I literally mean this, I think the only way to overwhelm the automatic fan is running prime95 in which case it can throttle the turbo way down. The fans automatic response is pretty much going to be fan off and fan %20. On the first day after many hours of installing and plex importing my library it was mearly warm to he touch and the barley audible fan was kicking out some warm air at the speed of a fart from a flea. You CAN set the fan speed to something static in the bios (wonderful visual bios system btw) as well as setting up color/brightness/response of the power and hard drive LED indicators. I am keeping the fan on auto because I want it off when the system is idle.

Also something thats nice, hopeful but not really accessible yet, since the beginning of the year plex has had quicksync acceleration in a beta build available to plex pass owners. Unfortunately work on it seems to be rather slow and it is still in beta, it seems to be getting most of its face time on NAS servers with intel CPUs. Thankfully I don't need it but it will be nice once it comes out as it yields significant performance increases on the j3455.

So far it covers everything I needed it to do. It gets all my content organised and streamable to any of the many streamers in my house (cable is cut, everything is done through the streamers) as well as the ability to stream it remotely to my phone. There isn't much chance that I will need more then one transcode in my house, obviously if you need more transcode streams you will need to jump to a bigger and more expensive cpu, but then there is no shortage of those. Oh and for the moment i am going to keep the Intel NUC on wifi, its 802.11ac 1x1 is getting a 433mbps link and since it will only be sending out streams of 2-10mbps I don't feel it will overwhelm my wifi in the least. I don't need another Ethernet cable snaking from my network cluster. -_-

If you want me to try anything with plex on it leave a note. Can't answer any questions about kodi though, I gave up trying to understand it so its not anywhere to be found here.
 

JeffMD

Platinum Member
Feb 15, 2002
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Like I said several times, it has no problem with 1080p. The cpu passes the 2000 passmark litmus test and my test conclude that transcoding a good 1080p 10mbit down is faster than realtime. I don't have any raw blueray 20+mbit stuff as most of my content is fansubbed anime and tv showes that consist around 1-5Mbits a second. If you are looking to do something with 4k than I would pass, but then if you are trying to store and plex a collection of 4k videos for your high end entertainment center I would spend more than $129 on my plex server. :)
 

XavierMace

Diamond Member
Apr 20, 2013
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Raw Bluray rips will bring that to it's knees, just an FYI. I can manage to pull off 2 raw real time Bluray transcodes running as a VM on a Xeon E5-2670 V2 which clocks in with a passmark score of 15k. But raw DVD's or anything already encoded down would be fine.
 

JeffMD

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Feb 15, 2002
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Xav, good to know when building a high end server. I would have thought it would take considerably less for blue ray 1080p. Makes me wonder how 4k plexing can be even considered. Saddly right now plex is more about developing personal info collecting news channels that no one asked for instead of quicksync support which would greatly speed all this up.
 

XavierMace

Diamond Member
Apr 20, 2013
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I'm hoping to test 4K soon. That said, generally you still encode it down to a more reasonable rate before hand, then let Plex transcode it further as needed. That's also why you'll see a lot of people dropping the 5.1 audio down to stereo. A raw Bluray rip is 30Mbps.
 

JeffMD

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Feb 15, 2002
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Well after 6 days uptime with little preparation for becoming a headless unit (I pretty much installed everything in the intel driver package, let windows update, installed plex, dropped in my videos, matched, and let it rip on my networking shelf) it hasn't shown any issues. It has always accessible, drive shares are always up, plex is always responsive. Just yesterday I also installed qtorrent and had it grab all of the completed summer anime shows after which I refreshed plex and had them available. I have to hand it to the processor, it is a wonderful design which is great because the fan situation is pretty bad. The fan controller can only see the VRM (and a useless case sensor) temps so you will pretty much never see it go above the %20 "on" state (It will turn off when under a certain temp). However the cpu produces heat at a glacial pace so while the top of the unit can get fairly warm, it will never throttle because the cpu won't get so hot that the heatsink can't pull it away fast enough, so it is always running 2.1ghz. Also at the default %20 minimum it makes no noise, I had to put my ear to the case. It does actually become audible at %30 though.

So for $129 it has been quite the little box, and I hope to see the cpu in many budget laptops as I would easily beable to recomend it. In the past the celeron and atom processors have ALL been quite disappointing and anemic struggling to offer anything more then the most basic web browsing experience.
 

JeffMD

Platinum Member
Feb 15, 2002
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There is no air flow and no way to radiate the heat out side the box. It will overwhelm itself without the fan. It lives in turbo mode, too.