HTPC Credentials - Local Media Playback and Video Processing

Evaluation of local media playback and video processing is done by playing back files encompassing a range of relevant codecs, containers, resolutions, and frame rates. A note of the efficiency is also made by tracking GPU usage and power consumption of the system at the wall. Users have their own preference for the playback software / decoder / renderer, and our aim is to have numbers representative of commonly encountered scenarios. Towards this, we played back the test streams using the following combinations:

  • MPC-HC x64 1.8.5 + LAV Video Decoder (DXVA2 Native) + Enhanced Video Renderer - Custom Presenter (EVR-CP)
  • MPC-HC x64 1.8.5 + LAV Video Decoder (D3D11) + madVR 0.92.17 (DXVA-Focused)
  • MPC-HC x64 1.8.5 + LAV Video Decoder (D3D11) + madVR 0.92.17 (Lanczos-Focused)
  • VLC 3.0.6
  • Kodi 18.1

The thirteen test streams (each of 90s duration) were played back from the local disk with an interval of 30 seconds in-between. Various metrics including GPU usage and at-wall power consumption were recorded during the course of this playback. Prior to looking at the metrics, a quick summary of the decoding capabilities of the Intel Iris Plus Graphics 655 is useful to have for context.

The GPU supports hardware accelerated decoding of all popular codecs, including VP9 Profile 2.

All our playback tests were done with the desktop HDR setting turned on. It is possible for certain system configurations to have madVR automatically turn on/off the HDR capabilities prior to the playback of a HDR video, but, we didn't take advantage of that in our testing.

VLC and Kodi

VLC is the playback software of choice for the average PC user who doesn't need a ten-foot UI. Its install-and-play simplicity has made it extremely popular. Over the years, the software has gained the ability to take advantage of various hardware acceleration options. Kodi, on the other hand, has a ten-foot UI making it the perfect open-source software for dedicated HTPCs. Support for add-ons make it very extensible and capable of customization. We played back our test files using the default VLC and Kodi configurations, and recorded the following metrics.

Video Playback Efficiency - VLC and Kodi

A comparison of the above two graphs for the VP9.2 stream shows that VLC doesn't use hardware accelerated decode for the stream, while Kodi does. With hardware acceleration enabled the system is able to play back all the streams while consuming less than 25W. That said, in general, it appears that Kodi is more power-efficient compared to VLC.

MPC-HC

MPC-HC offers an easy way to test out different combinations of decoders and renderers. The first configuration we evaluated is the default post-install scenario, with only the in-built LAV Video Decoder forced to DXVA2 Native mode. Two additional passes were done with different madVR configurations. In the first one (DXVA-focused), we configured madVR to make use of the DXVA-accelerated video processing capabilities as much as possible. In the second (Lanczos-focused), the image scaling algorithms were set to 'Lanczos 3-tap, with anti-ringing checked'. Chroma upscaling was configured to be 'BiCubic 75 with anti-ringing checked' in both cases. The metrics collected during the playback of the test files using the above three configurations are presented below.

Video Playback Efficiency - MPC-HC with EVR-CP and madVR

The GPU is able to handle the madVR DXVA configuration, but, the D3D loading jumps above 90% for most streams in the Lanczos configuration. As expected, the NUC8i7BEH is not the system to choose if high-end customized video processing is required. The GPU is simply not up to the task. That said, there is likely no other system with a similar form-factor that can perform better than the Bean Canyon NUC for this particular task.

HTPC Credentials - YouTube and Netflix Streaming Miscellaneous Aspects and Concluding Remarks
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  • cacnoff - Wednesday, April 3, 2019 - link

    These are platform PCIe lanes that come off the OPI (on package interface) as there are no discrete pch options for U series cpus.

    Check the direct processor page here.

    https://www.intel.com/content/www/us/en/products/p...

    "PCI Express (PCIe) Configurations describe the available PCIe lane configurations that can be used to link the PCH PCIe lanes to PCIe devices."
  • DenvR - Wednesday, April 3, 2019 - link

    I'm pretty sure all 14nm U-series processors feature at least 8 PCIe 3.0 lanes, some even more (the i5-7200U has got 12 of those and the i7-8559U 16. Please correct me if I'm wrong.
  • vortexmak - Wednesday, April 3, 2019 - link

    Did Intel drop the IR receiver from the NUC?
  • mikato - Thursday, April 4, 2019 - link

    I wondered this also. The board layout diagram has a "CIR Receiver" so maybe that's it. But I'm really surprised there is no mention in the system specs table next to I/O or in any of the HTPC pages of the article. Wasn't it one of the good selling points of these Intel boxes?
  • CSMR - Wednesday, April 3, 2019 - link

    Shame that this is lacking a full displayport output, instead making it an old DP1.2 share a thunderbolt output. Displayport is more important than hdmi for a machine that is overkill for HTPC use. i7s will be much more often connected to monitors than to TVs.
  • mischlep - Wednesday, April 3, 2019 - link

    For the Intel NUC8i7BEH (Bean Canyon), in the Comparative PC Configurations, does the listed price "$963 (as configured)" include an OS or not? The other selections (other than the NUC7i7BNH) explicitly said "as configured, No OS". You specifically marked it as "as configured, no OS" in the specifications on the first page.
  • PeachNCream - Wednesday, April 3, 2019 - link

    The price is a bit high, but I'm guessing some of that is due to the Iris GPU which is a thing I'd love to see appear in a wider variety of systems. Iris is a good idea from a power consumption and cooling simplification standpoint when compared to most dGPU offerings on the lower end of the scale.
  • QChronoD - Wednesday, April 3, 2019 - link

    Still only HDMI 2.0 and DP1.2 on these? I guess I can only hope that next version will have finally been updated to support 4k120 w/ VRR.
  • abufrejoval - Wednesday, April 3, 2019 - link

    This CPU IMHO is one of the best designs Intel has and I’ve been itching to buy one of these for quite some time, albeit always in a slightly different form factor.

    For starters just enter i7-8559U into your Google search bar and hit “shopping”. You’ll notice, there are exactly two offerings: The NUC for around €500 and the MacBooks between €2000 and €3500. Perhaps the latter costs extra, because it includes one Terabyte of SSD, €120 these days in a market with competition. It certainly has just the same CPU/GPU as the €2000 model.

    I own the Skylake predecessor, also designed for Apple, an i5-6267U but in a cheap Windows notebook, which has an Iris 550 iGPU with close to identical graphics performance, but only half the number of cores that top out at 3.3 GHz, but doesn’t drop below 2.9 GHz even if abused by Prime95.

    It’s a sweet machine, giving nicely balanced CPU and graphics power and most importantly, it had zero price premium at the time, for twice the graphics punch of ordinary 520 or 530 iGPUs. It also performs very much identical to a 512 graphics core Kaveri A10-7850K in *every regard*, CPU INT and FP, GPU, OpenCL, only that the Kaveri uses 95 Watts not 28. It was quite simply the better APU and stopped me buying AMDs since.

    It also has such great Linux compatibility CentOS, Fedora, Ubuntu and Android-x86, none of the grief Nvidia and AMD give you: I know how to manage that with all those V100, GTX and RTX I operate, but I also appreciate not having to.

    Alas, you cannot buy this newer CPU inside a notebook other than at crazy Apple prices. And incidentally, you cannot buy it as a Mini-ITX either: You’re stuck with NUC or nothing… which is sort of ok, now that you stuff terabytes of NVMe at affordable prices inside.

    This chip must be quite a bit more expensive to make, twice the GPU silicon real-estate, eDRAM, packaging etc., but Intel doesn’t charge extra for GPU, no matter what type, just for peak clock speed.

    But it seems they also simply won’t sell the chip, not for the official price or any other, unless you’re Apple or buy a NUC. I still don’t know how Medion managed to grab sufficient number of them to produce a €600 laptop, but I knew enough to grab one, enjoyed it ever since and I am writing on it just now.

    So if I cannot have another as a notebook, I’d love to use it as a mini-server: That’s another use case where the fantastic power efficiency at low loads or idle, combined with its pretty awesome sprint power is well appreciated. But I’d really like it to have ECC memory then and a slightly bigger fan for quiet operation even under load, because it will run “forever” and use consistency critical stuff, including ZFS for Linux.

    But because that makes it the nicer Xeon-D for many, Intel will cut that fuse…

    For Intel this NUC must be one of the lowest profit items in their inventory, which translates to one of the best value propositions if you can live with the limitations. In theory you should be able to buy the board without the case and there is at least one company out there that sells fan-less cases to fit the guts of this NUC.

    Even if that case costs a €200 premium, you can still buy two fully loaded passive NUCs with 32GB of RAM and 4TB of SSD before you reach Apple entry territory.
  • gglaw - Wednesday, April 3, 2019 - link

    "With Thunderbolt 3 having matured, and the availability of various eGFX enclosures, the absence of a discrete GPU in the NUC8i7BEH will hardly be felt."

    completely disagree. Relying on huge, bulky, and costly external implementations is a horrible idea compared to paying a small premium and getting better GPU inside the NUC. Who in the world would buy a mini PC knowing they're going to frequently need to plug it into a huge box multiple times the size of the NUC and driving the total cost to a whole new bracket? There's a reason why the eGFX market is a tiny, niche market.

    These are not priced as budget PC solutions, so the small price bump to get better graphics inside the box is completely worth it for users who want that type of performance. Or for others who will use it strictly for media and productivity the can stick with Intel Graphics. Almost no one should buy the base Intel Graphics with the idea of adding an eGFX solution later. They'd be better off selling the base one and buying a Ryzen or Vega M-Intel solution.

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