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Measurement and Analysis Tools
Our test procedure is designed to determine the overall system power consumption
at various states (measured using a Seasonic Power Angel), and to test the integrated
graphics' proficiency at playing back high definition videos. Standard HD-DVD
and Blu Ray discs can be encoded in three different codecs by design: MPEG-2,
H.264/AVC and VC-1. MPEG-2 has been around for a number of years and is not
demanding on modern system resources. H.264 and VC-1 encoded videos on the other
hand, due to the amount of complexity in their compression schemes, are extremely
stressful and will not play smoothly (or at all) on slower PCs, especially with
antiquated video subsystems.
We use a variety of H.264/VC-1 clips encoded for playback on the PC as well
as one actual Blu Ray title. The clips are played with PowerDVD 7 and a CPU
usage graph is created by the Windows Task Manger for analysis to determine
the approximate mean and peak CPU usage. High CPU usage is indicative of poor
video decoding ability on the part of the integrated graphics subsystem. If
the video skips or freezes, we conclude the board's IGP (in conjunction with
the processor) is adequate to decompress the clip.
Cool'n'Quiet was enabled and Aero Glass, the Vista Sidebar, and the Superfetch
service were disabled during testing.
Video Test Suite
1080p | 24fps | ~7.5mbps
720p | 60fps | ~12mbps
WVC1: Microsoft Flight Simulator X trailer
is encoded in VC-1. It's a compilation of in-game action from a third
person point of view. It is encoded using the Windows Media Video
9 Advanced Profile (aka WVC1) codec a much more demanding implementation
1080p | 24fps | ~20mbps
Blu Ray: Terminator 2: Judgement Day is a minute
and thirty second clip from the Blu Ray version of the film.
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