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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ganeshts - Tuesday, January 22, 2013 - link
I wish :) But, to be honest, MS doesn't even provide keys to us (We have to use the eval period, unactivated)That said, I first set up Win 8 for a relative on a newly purchased notebook, and I seriously hated it. Even now, I am not used to the various new features available to interact with the OS. But, I have now come to realize that, technically, the OS has some very interesting improvements in terms of efficiency and multimedia support (at least). Give the eval version a try without activating, you might be pleasantly surprised :)
glugglug - Wednesday, January 23, 2013 - link
Replacing multiple DVRs is the primary use of my PC..I suppose you could have a Media Center w/CableCARD build separate from the HTPC you have here, but IMO, Media Center is **the** killer HTPC app.
NikosD - Friday, January 25, 2013 - link
4K decoding ? Why not benchmark at that resolution ?Ivy and VP5 are the only GPUs (VPUs) capable of HW accelerated H.264 4K decoding.
CSMR - Sunday, January 27, 2013 - link
Power consumption of around 40W is high for doing something as simple as media playback.With an Ivy Bridge chip you should be able to get sub 20W easily, and in fact sub 10W is achievable (http://www.silentpcreview.com/forums/viewtopic.php...
For a fanless system, this is important and will improve reliability and difficulty of cooling.
mr0000000000 - Wednesday, January 30, 2013 - link
Lordy that thing is beautiful - is that just a rendering or does that actually exist?PokerGuy - Monday, February 4, 2013 - link
From the article: "I would strongly suggest HTPC users relying on WMC (irrespective of the OS) to move on to other platforms."What other platform could I move to that would allow me to use cablecard? I have HD Homerun Prime and absolutely love it. I can watch any and everything on any PC in the house, including my HTPC for my main tv in the living room. I use XBMC as my library manager for all my movies and music, but I can't use it with cablecard, so I still need WMC for that purpose.
Win 8 comes without WMC, unless you want to pay extra, so for me it's a step backwards from Win 7. Paying to downgrade in functionality doesn't seem like a good idea.
connor2k - Friday, February 15, 2013 - link
I have looked through most of the comments. Is it listed elsewhere?Deuge - Wednesday, September 18, 2013 - link
Hi Ganesh, i notice the new haswell NUC with HD5000 is coming out. Will you be doing an HTPC review of it?? Seems like the perfect HTPC to me.http://www.legitreviews.com/intel-nuc-kit-d54250wy...