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
Power Consumption and Thermal Profile
The power consumption details and case temperatures at full load were recorded in our earlier piece covering the build of the HTPC. However, we have made some updates to the system with the addition of an extra RAM stick as well as an additional SSD This time around, we decided to run a stress test with Prime 95 and Furmark for 24 hours. As can be seen below, CoreTemp reports that the core temperatures went as high as 86 C before settling down to around 80 C. The TDP rating of the Core i3-3225 is 55W, and CoreTemp reported between 53.8 W and 54.6 W throughout.
We removed the GPU loading and let Prime 95 alone run for some time. With almost no load on the GPU, the power consumed by the processor jumped down to around 40 W. This thermal budget allocation is pretty interesting, with less than 30% allocated to the GPU and the rest to the CPU. The i3-3225 doesn't have a Turbo mode, and hence, it is unable to take advantage of the headroom offered by the idle GPU.
Average power consumption numbers for various scenarios are presented in the table below. Unless explicity specified, the specified scenario was tested using Windows 8 Pro x64.
| Passive Ivy Bridge HTPC (Core i3-3225 / Asus P8Z77-I Deluxe) Power Consumption | |
| Windows 7 - Idle (Display off) | 27.71 W |
| Windows 8 - Idle (Display off) | 24.86 W |
| Windows 7 - Idle (Display on) | 28.02 W |
| Windows 8 - Idle (Display on) | 26.66 W |
| Sleep | 2.00 W |
| Prime95 v25.9 + Furmark (Full loading of both CPU and GPU) | 88.75 W |
| [Updated: New!] Prime95 v27.7 + Furmark 1.10.3 (Full loading of both CPU and GPU) | 89.77 W |
| Prime95 v25.9 (Full loading of CPU only) | 58.25 W |
| [Updated: New!] Prime95 v27.7 (Full loading of CPU only) | 62.56 W |
| 1080p24 H.264 Blu-ray Playback from ODD - CyberLink PowerDVD 12 | 38.15 W |
| 1080p24 VC-1 Blu-ray Playback from ODD - CyberLink PowerDVD 12 | 37.64 W |
| 1080i60 VC-1 Blu-ray Playback from ODD - CyberLink PowerDVD 12 | 39.73 W |
| 1080p24 VC-1 Blu-ray ISO Streaming from NAS - CyberLink PowerDVD 12 | 34.78 W |
| 1080p24 H.264 MVC Blu-ray ISO Streaming from NAS - CyberLink PowerDVD 12 | 37.86 W |
In our initial piece, we had noted the case and heat sink temperatures in the Fahrenheit scale. Since the configuration has changed (and the system consumes more power now), we have refreshed the case / heat sink temperature figures below. We have also shifted to the Celsius scale, as requested in some of the reader comments.
Chassis Temperature in C (Top and Faceplate) after 24 Hours of Full CPU / GPU Loading
Chassis Temperature in C (Side Bolted to the Heat Sink) after 24 Hours of Full CPU / GPU Loading
Heat Sink Assembly Temperature in C after 24 Hours of Full CPU / GPU Loading
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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?