HTPC enthusiasts are often concerned about the quality of pictures output by the system. While this is a very subjective metric, we have decided to take as much of an objective approach as possible. Starting with the Core 100 review last year, we have been using the HQV 2.0 benchmark for this purpose.

The HQV 2.0 test suite consists of 39 different streams divided into 4 different classes. The playback device is assigned scores for each, depending on how well it plays the stream. Each test was repeated multiple times to ensure that the correct score was assigned. The scoring details are available in the testing guide on the HQV website.

In the table below, we indicate the maximum score possible for each test, and how much the ASRock CoreHT 252B was able to get. As mentioned in the previous section, we used Intel Graphics Driver v2372 for the benchmarking.

 
HQV 2.0 Benchmark
Test Class Chapter Tests Max. Score ASRock CoreHT 252B (Intel HD3000)
Video Conversion Video Resolution Dial 5 5
Dial with Static Pattern 5 5
Gray Bars 5 5
Violin 5 5
Film Resolution Stadium 2:2 5 5
Stadium 3:2 5 5
Overlay On Film Horizontal Text Scroll 5 3
Vertical Text Scroll 5 5
Cadence Response Time Transition to 3:2 Lock 5 5
Transition to 2:2 Lock 5 5
Multi-Cadence 2:2:2:4 24 FPS DVCam Video 5 5
2:3:3:2 24 FPS DVCam Video 5 5
3:2:3:2:2 24 FPS Vari-Speed 5 5
5:5 12 FPS Animation 5 5
6:4 12 FPS Animation 5 5
8:7 8 FPS Animation 5 5
Color Upsampling Errors Interlace Chroma Problem (ICP) 5 2
Chroma Upsampling Error (CUE) 5 2
Noise and Artifact Reduction Random Noise SailBoat 5 5
Flower 5 5
Sunrise 5 5
Harbour Night 5 5
Compression Artifacts Scrolling Text 5 3
Roller Coaster 5 3
Ferris Wheel 5 3
Bridge Traffic 5 3
Upscaled Compression Artifacts Text Pattern 5 3
Roller Coaster 5 3
Ferris Wheel 5 3
Bridge Traffic 5 3
Image Scaling and Enhancements Scaling and Filtering Luminance Frequency Bands 5 5
Chrominance Frequency Bands 5 5
Vanishing Text 5 5
Resolution Enhancement Brook, Mountain, Flower, Hair, Wood 15 15
Video Conversion Contrast Enhancement Theme Park 5 5
Driftwood 5 5
Beach at Dusk 5 2
White and Black Cats 5 5
Skin Tone Correction Skin Tones 10 3
         
    Total Score 210 176

This table is almost the same as the one we presented in the Llano review. The only difference is that the HD 3000 now gets some points for skin tone correction. While AMD and NVIDIA tend to correct the skin tones and make the picture appear better as the strength of the correction is increased (move away from default), Intel seems to work best at the default setting. Experimenting with the strength of the skin tone correction makes the image quality much worse than either AMD's or NVIDIA's at any setting.

HQV 2.0 Benchmark Scores

It is heartening to see that there is a big jump in performance for Intel's integrated graphics with respect to the HQV scores. While the Core 100 turned up with a sub-140 score last year, we see the CoreHT 252B rising above what AMD and NVIDIA's entry level GPUs achieve.

Does this improved HQV score actually lead to better picture quality in general? What about other HTPC video aspects? We will cover these in the next two sections.

Network Streaming Refresh Rate Handling
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  • uncola - Friday, September 02, 2011 - link

    intel really needs to get their shit together re: dxva and hardware decoding for video Reply
  • vlado08 - Friday, September 02, 2011 - link

    First I want to tank you Ganesh for the article. Keep the good work!

    Would you give us some more information please.

    Can it play 1080 60p?
    There are a lot of camcorders that can record in AVCHD v2.0 (1080 60p 28Mb/s).

    What are the temperatures (CPU HDD) inside during idle and 100% load?
    Why ASRock don't make CPU fan to blow outside the case as in notebooks?

    Can you select RGB or YUV output in new intel drivers?
    Reply
  • ganeshts - Friday, September 02, 2011 - link

    Yes, it does play 1080p60 without issues (even the Clarkdales and Arrandales can do it).

    The 1080p60 streams are part of our test suite. But, yet, you are right .. I should have mentioned it.

    The HTPC outputs RGB, and there is no obvious way to change it to YUV in the graphics control panel. However, the levels (0-255 / 16-235) can be modified with the Quantization Range option.

    I will get back to you on the temperatures in a day.
    Reply
  • vlado08 - Friday, September 02, 2011 - link

    Thanks Ganesh, is 1080 60p hardware accelerated? Reply
  • ganeshts - Friday, September 02, 2011 - link

    Yes, it is.

    Both 1080p60 and 16 reference frame H.264 videos were able to get DXVA2 hardware acceleration using the Microsoft DTV-DVD decoder.
    Reply
  • ganeshts - Friday, September 02, 2011 - link

    Here is the temperature info you requested (measured using the AXTU tool for the mobo and the CPU / HD Tune Pro for the hard disk in Celsiuis scale):

    Idle:

    Motherboard : 42
    CPU : 44
    Hard Disk : 37

    Prime95 + Furmark (after 15 minutes of activity):

    Motherboard : 48
    CPU : 83
    Hard Disk : 39
    Reply
  • tech6 - Friday, September 02, 2011 - link

    I bought a previous generation HT100-BD and it was a fine HTPC but the ASRock service was appaling. The unit had two failed HDMI ports in the first 12 months and the second time ASRock demanded payment to fix it (even tough it was under warranty).

    As convenient as it may seem, I would go down the DIY route just for the flexibility of being able to fix it yourself.
    Reply
  • Rick83 - Friday, September 02, 2011 - link

    As paying the Windows Tax for a single purpose/ non-gaming machine is a bit pointless, I wonder how well the hardware in this box cooperates with Linux?
    I tried to build a HTPC on an older AMD platform and was continually being thwarted by driver issues (WLAN, sound, graphics), but here there actually may be an advantage, as Intel has a developer that manages libva, so their acceleration might work better on linux than DXVA..

    Also XBMC has a native linux version which is quite nice and should even boot faster in an optimized system than a Windows system.
    Reply
  • Vagn Henning - Friday, September 02, 2011 - link

    As you might have noticed, the box ships without Windows. You see, that's the difference between your "Windows tax" and other taxes: You don't have to pay it. You are free to install any other OS. If you stopped pretending otherwise, someone might actually answer your question... Reply
  • Rick83 - Friday, September 02, 2011 - link

    Well, the reviewer only used Windows, hence assuming that one pays for it.
    A Windows-only review is of little help for someone attempting to deploy linux on this box.
    If the reviewer implies the windows tax, by not mentioning alternatives, he is the one accepting it, I am merely referring to his point of view.

    Also, the alternative to the Windows tax is the Linux tax. The latter can often end up being higher....
    Reply

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