Getting the Best out of an Ivy Bridge HTPC: Windows 8, madVR and More..
by Ganesh T S on January 20, 2013 3:00 PM EST- Posted in
- Home Theater
- Intel
- HTPC
- Ivy Bridge
- Windows 8
- Passive Cooling
Network Streaming Performance - Netflix
The drivers for the Intel HD 4000 enable hardware accelerated decode and rendering for Netflix streams in Silverlight on Windows 7. The Windows 8 Netflix app has been a bit of a mystery where it is not readily evident as to whether hardware acceleration is present or not, and whether it is being really utilized. In this section, we will take a look at how Netflix behaves on Windows 7 and Windows 8. The ISP at my location is Comcast, and unfortunately, there is no access to the Netflix 5 Mbps Super HD streams yet.
Netflix on Windows 7
On Windows 7, Netflix needs the Silverlight plug-in to be installed. We played back our standard test stream using Internet Explorer.
The Silverlight plug-in attempts GPU acceleration and enables it on our system. Manual stream selection is available. The maximum playback quality has a bitrate of 64 kbps for the audio and 3 Mbps for the video.
We will take a look at the efficiency of the system while playing back the stream towards the end of this section.
Netflix on Windows 8
On Windows 8, Netflix is streamed through a Metro app. Fortunately, the same debug shortcut keys used in the Silverlight version work here too. A nice add-on touch is that the manual stream selection and playback statistics OSD can be made to appear simultaneously.
It is not immediately evident as to whether hardware acceleration is being utilized or not. However, the aspect which stands out immediately is the fact that the video playback bitrate can go as high as 3.85 Mbps. Audio still remains at a lowly 64 kbps. Hopefully, a future update to the Netflix app can provide us with the soundtracks available on specialized media streamers.
Netflix Power Consumption - Windows 7 vs Windows 8
While the Silverlight plug-in OSD helpfully reports that GPU acceleration is being taken advantage of, it doesn't indicate the efficiency in any way. On the other hand, the Windows 8 app doesn't report GPU acceleration status at all. To determine the actual efficiency of Netflix playback, we recorded power consumption at the wall for both scenarios over a 10 minute interval during the middle of the stream.
The graph presents some very interesting results. With Windows 8, the system consumes much less power and the stream is also of higher quality. GPU acceleration in the app makes the streaming more than 30% efficient when compared to the Silverlight version. Compared to Windows 7 Silverlight, the Netflix app is efficient by approximately 35%. Windows 8, by itself, seems to consume less power too. Considering these results, if Netflix forms any part of your HTPC usage scenario, it is a no-brainer to upgrade from Windows 7 to Windows 8.
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iwayman1001 - Monday, January 21, 2013 - link
I think most if not all commenters here are completely missing the point on Jriver. Jriver can be your DLNA server, your media cloud server located in your own house. I've tried most MC software, WMC, TotalMedia, NextPVR, BeyondTV, XBMC, etc... None of them can be set up easily as media server cloud so that you can watch your live/recorded TV, all your ripped TV shows, movies, songs, etc over the Internet, your Android phones, your iPhone. You can watch your US live TV, your own movies, recorded TV shows, songs while you'r in Europe provided you have Internet access in the hotel or your smart phone. It take 5 minutes in Jriver to set that up after you build your home Jriver's media library. You do not have to know about public IP/private IP address, etc. Tryi it and you will find out all other MC servers are just for in home, not roaming on the road like Jriver provides.Monkeysweat - Monday, January 21, 2013 - link
were you using a RC candidate or last stable release (v.11)?ganeshts - Monday, January 21, 2013 - link
Frodo RC2However, I have seen the VC1 issue in previous stable builds too.
Iketh - Monday, January 21, 2013 - link
I haven't been able to respond to a post on this site for a couple months now. Can only make a new thread. I'm using IE9. When trying to reply to someone, it hangs with the working GIF twirling forever. Probably is related to the fact that I can't stay logged in from 1 page to the next either...Laststop311 - Tuesday, January 22, 2013 - link
Maybe I'm in the minority but I like an HTPC that can game as well. Yeah the htpc cases that can properly operate a full size high end gpu are bigger and louder. But with careful hardware choices and quality noctua fans you can make them nearly silent. You got to have a good furniture set up as well to make gaming with a wireless keyboard and mouse a reality. Proper high end gpu will give you better video playback in some situations as well.I can see a place for both. But I don't think ivy bridge is a good choice to jump in on the fanless htpc's. Haswell is perfectly suited for this application, power consumption lowered cpu performance and especially gpu performance increased greatly as this is a tock release which is always the best one. The Haswell version of this pc should run even cooler temps while providing better performance, especially on the gpu side (and intel better have fixed the 24hz bug)
gamoniac - Tuesday, January 22, 2013 - link
Thanks Ganesh, for comparing Win7 and Win8, and Metro vs Silverlight video rendering. I am surprised that the Netflix Metro apps are so much more efficient. Having just switched to Win8 two days ago, after reading this article, I checked and am able to confirm that on Win8, Netflix Metro app uses only 2% of my 6-core AMD 1090T CPU (on SSD), compared to the 8% of desktop IE10 browser (Silverlight), which is still better than Win7.Furthermore, the Metro Netflix app better renders in HD than in Silverlight, which periodically fails to render in HD for certain movies. Thanks again.
don_k - Tuesday, January 22, 2013 - link
I probably ask for this in just about every article in this, truly excellent, website so at the risk of becoming a broken record, could we please oh please have linux tests to go along with Windows on these things?HTPC, 'enterprise' product tests, file server type tests, all of these are simply incomplete without linux
testing without going into the reasons why as it will likely result in yet another flame war :)
I realise Linux isn't exactly your area of expertise but is it really that much more difficult to boot a linux based XBMC[1] live CD than it is to sit through yet another Windows installation?
Please consider doing this, I would love nothing more than to see Linux tests in my favourite hardware/review website.
http://mirrors.xbmc.org/releases/XBMCbuntu/xbmcbun...
ganeshts - Tuesday, January 22, 2013 - link
We definitely do Linux testing in our NAS reviews (using a CentOS guest OS). Also, my primary workplace m/c is RHEL 6 :)don_k - Monday, January 28, 2013 - link
Glad to hear it! :)So, are you going to be testing HTPCs with linux based XBMC or..?
coolhund - Tuesday, January 22, 2013 - link
Nice HTPC setup, but Windows 8? Really?How much did MS pay for that?