ECS LIVA x2 Review: A Compact & Fanless Braswell PC
by Ganesh T S on August 24, 2015 8:00 AM ESTHTPC Credentials
Given the ECS LIVA x2's fanless nature and the presence of Intel HD Graphics, we expect many purchasers to use it as a media playback machine / HTPC. Given the specifications, it is quite clear that we are not looking at a madVR capable machine, but one targeted at the entry-level / average HTPC user or someone looking for a HTPC to put in a second or third room (non-primary HTPC). There are two HTPC aspects that we will explore in this section, one related to network streaming (OTT services), and the other related to local file playback. Prior to that, we have a small sub-section dealing with refresh rate accuracy.
Refresh Rate Accurancy
Starting with Haswell, Intel, AMD and NVIDIA have been on par with respect to display refresh rate accuracy. The most important refresh rate for videophiles is obviously 23.976 Hz (the 23 Hz setting). As expected, the ECS LIVA x2 has no trouble with refreshing the display appropriately in this setting.
The gallery below presents some of the other refresh rates that we tested out. The first statistic in madVR's OSD indicates the display refresh rate.
Network Streaming Efficiency
Evaluation of OTT playback efficiency was done by playing back our standard YouTube test stream and five minutes from our standard Netflix test title. Using HTML5, the YouTube stream plays back a 720p encoding. Since YouTube now defaults to HTML5 for video playback, we have stopped evaluating Adobe Flash acceleration. Note that only NVIDIA exposes GPU and VPU loads separately. Both Intel and AMD bundle the decoder load along with the GPU load. The following two graphs show the power consumption at the wall for playback of the HTML5 stream (MP4/AVC @ 1080p) in Mozilla Firefox (v 40.0.2).
GPU load was around 41.53% for the YouTube HTML5 stream and 8.26% for the steady state 6 Mbps Netflix streaming case.
Netflix streaming evaluation was done using the Windows 8.1 Netflix app. Manual stream selection is available (Ctrl-Alt-Shift-S) and debug information / statistics can also be viewed (Ctrl-Alt-Shift-D). Statistics collected for the YouTube streaming experiment were also collected here.
The ECS LIVA series of PCs have consistently been amongst the most power-efficient OTT streaming boxes around. The LIVA x2 is not the most efficient, but it is still quite a bit lower than the other passively cooled mini-PCs that we have evaluated before.
Decoding and Rendering Benchmarks
Prior to testing out the decoding and rendering performance, we take a look at the DXVA decoding support available via Intel's Braswell GPU drivers. Note that we using v10.18.14.4234 of the Intel HD Graphics Drivers for Braswell and DXVA Checker v3.60 (compared to v10.18.14.4214 and v3.50 respectively that we used in the ASRock Beebox review)
The codec support has not changed, though DXVA Checker now confirms explicitly that VP8 and VP9 DXVA decoding support for Braswell doesn't exist (at least on Windows 8.1). As we already know from the Beebox review, the above screenshot confirms hardware acceleration for MPEG-2, VC-1, H.264 and HEVC. However, there is no HEVC Main10 support.
In order to evaluate local file playback, we concentrate on EVR-CP and Kodi. We already know that EVR works quite well even with the Intel IGP for our test streams. In our earlier reviews, we focused on presenting the GPU loading and power consumption at the wall in a table (with problematic streams in bold). Starting with the Broadwell NUC review, we decided to represent the GPU load and power consumption in a graph with dual Y-axes. Nine different test streams of 90 seconds each were played back with a gap of 30 seconds between each of them. The characteristics of each stream are annotated at the bottom of the graph. Note that the GPU usage is graphed in red and needs to be considered against the left axis, while the at-wall power consumption is graphed in green and needs to be considered against the right axis.
All the clips played back comfortably in Kodi. In MPC-HC v1.7.9, the 1080i clips occasionally hit 100% GPU loading, but no visible frame drops were seen. This is in contrast to the ASRock Beebox where we had no such issues. Perhaps a combination of change in the software as well as the DRAM in the unit has led to this substantially higher GPU loading for interlaced clips.
Moving on to HDMI audio, we find that v10.18.14.4234 Intel HD Graphics driver package has no updates to the audio driver. Dolby Digital Plus bitstreaming works well (both in the Netflix app and from various local media playback programs), but HD audio bitstreaming (Dolby TrueHD and DTS-HD MA) capability is not present.
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BrokenCrayons - Tuesday, August 25, 2015 - link
Hi BMN! Not everyone out there is concerned with video playback for a system like this. As a small/cheap/quiet word processor and e-mail fetcher, platforms like the Liva x2 are perfectly suitable. Also, many people don't really worry much over specific decoding capabilities. As long as their new little computer can stream YouTube, Netflix, and Hulu, there's nothing to worry about and digging into the specifics isn't important or relevant.kmmatney - Monday, August 24, 2015 - link
I have a baytrail 3735D (quad core), which benchmarks about the same as the Braswell N3050, and while it seems fast enough most of the time, there are way to many instances where it skips and lags. Maybe it has to do with the eMMC storage, the overall experience isn't great. It's fine for a little while, but open up a few web pages, and things suddenly slow way down (with 2GB of RAM).BillyONeal - Monday, August 24, 2015 - link
Perhaps you meant envelope ?
experttech - Monday, August 24, 2015 - link
I just built a ASROCK N3150 B based HTPC and am quite impressed with the performance. The quad core chip comes for the same price as the N3050 and is quite impressive at I think it was like 6 watts of power. First time using a fanless CPU it feels awesome and weird when you turn on the system. You don't really feel its turned on! Perfect for watching all kinds of movies!BMNify - Monday, August 24, 2015 - link
you are far better off buying any Amlogic S812 or related HTPC box with http://www.cnx-software.com/ that comes with HDMI2 at 60fps HW/SW playback NEON 128-bit SIMD (and encode if its activated) as a generic option than even the very latest Atom x5 x5-Z8300 that yet again removes AVX/2 SIMD and is by all accounts not even as good as the antiquated Atom-Z3735F Q1'14 http://cpuboss.com/cpus/Intel-Atom-x5-x5-Z8300-vs-..."Instruction set extensions
SSE2
SSE4
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling N
owarchild - Monday, August 24, 2015 - link
BMNify, I'm not aware of any Amlogic S812 box with HDMI 2.0, can you give an example? CPU wise, Braswell is more powerful than Amlogic S812, for example a N3150 can decode H264 Hi10p. It's a pitty that Anandtech doesn't test the Braswell boxes with the latest OpenELEC beta versions...BMNify - Monday, August 24, 2015 - link
see http://kodi.wiki/view/Android_hardware for list to start with several Rockchip ,Amlogic, and x1 devices are capable, you need to review them and choose your requirementssearch "Amlogic HDMI 2" etc and try here for a device that suits you http://www.geekbuying.com/Search/?keyword=RK3288
emblemparade - Monday, August 24, 2015 - link
I have the original LIVA, which has a N2807, and costs about the same as this new one. I love it!The only reason to "upgrade" would be for the better GPU and slightly better wifi. The CPUs, in fact, are equal in ability: http://www.cpubenchmark.net/compare.php?cmp[]=2263&cmp[]=2541
But actually, the X2 seems like a worse machine. It's bigger and sips more power. If you're interested in this box, consider getting the original model if you can find it!
ZachSaw - Monday, August 24, 2015 - link
For so many years Anandtech's HTPC reviews have been spreading misconceptions about the 23.976Hz refresh rate. As an avid reader, I used to think getting the perfect 23.976Hz refresh rate is all you need and have spent countless hours trying to do that with the various HTPCs I've owned over the years.As you used madVR to test HTPC "credentials", it unfortunately lacks an important metric in its debug OSD -- the actual frame rate the video is being played back. This takes the reference clock into account - so even if the display refresh rate says 23.976Hz (which in this case isn't even close - it's only 23.974Hz), you still have to multiply that by refclk (-ve makes it even lower). As you could see in your own screenshot, you still get a frame drop every half an hour. The unfortunate thing about this is, every ECS LIVA x2 box is going to have a slightly different rate.
And let's not forget that not all sources are 23.976fps - some are true 24p video, others are 60p etc. Some monitors still don't report 60Hz in its EDID!
To get true frame drop-/repeat-free playback, your media player needs to have the ability to do something like Reclock. Most of you probably haven't noticed but the DirectSound Audio Renderer (or any non-exclusive audio renderers) already resamples your audio before it goes out to your audio card (the only case where it doesn't resample is when your audio stream is the exact match of your Windows global audio settings and nothing else is playing audio). As such, asking the audio renderer to resample the audio a bit to make it match the display refresh rates won't affect the audio quality much but it will get rid of frame repeats / drops completely. If you care about audio quality, the Sanear Audio Renderer in Wasapi mode is the preferred choice. Anything less than 3% in clock adjustments will yield max audio quality. So even if you have a 24Hz refresh rate, adjusting 23.976fps to play at 24fps won't affect audio quality.
MPDN has an open source implementation of Reclock (to be used with either DirectSound or Sanear Audio Renderer) - https://github.com/zachsaw/MPDN_Extensions/blob/ma...
Oxford Guy - Tuesday, August 25, 2015 - link
Why not run the thermal test with the top of the unit off?