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TEST METHODOLOGY
Systems Compared:
Lenovo IdeaCentre A600:
Lenovo ThinkCentre A70Z 1165A3U:
Asus EeeTop ET2203-B0017:
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A70Z: CPU-Z screenshot taken at full load.
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ET2203: CPU-Z screenshot taken at full load.
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ET2203: GPU-Z screenshot.
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Measurement and Analysis Tools
H.264/VC-1 Test Clips
H.264 and VC-1 are codecs commonly used in high definition movie videos on
the web (like Quicktime movie trailers and the like) and also in Blu-ray discs.
To play these clips, we use Cyberlink PowerDVD.
1080p | 24fps | ~10mbps |
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1080p | 24fps | ~8mbps |
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x264/MKV Video Test Clip
MKV (Matroska) is a very popular online multimedia container
used for high definition content, usually using x264 (a free, open source
H.264 encoder) for video. The clip was taken from a full length movie; the
most demanding one minute portion was used. We use Media Player Classic
- Home Cinema to play it as its default settings allow it to use DXVA (DirectX
Video Acceleration) automatically when used with a compatible Intel/ATI
graphics chip. For Nvidia graphics we use CoreAVC to enable CUDA (Compute
Unified Device Architecture) support in MPC-HC.
1080p | 24fps | ~14mbps |
x264 1080p: Spaceship is a 1080p x264 clip encoded from
the Blu-ray version of an animated short film. It features a hapless
robot trying to repair a lamp on a spaceship.
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Flash Video Test Clip
Many users watch media online in Adobe's Flash format on sites
like Hulu and YouTube. Now that the latest 10.1 beta version of Flash supports
GPU acceleration, only slower systems like those powered by a single core
Atom without a proper IGP struggle with Flash in HD. Our test clip is a
HD movie trailer from YouTube played in Firefox.
1280x544 | 25fps | ~2mbps |
Flash HD: Iron
Man Trailer #1 is the first trailer from the feature film
of the same name. It's a YouTube HD video, though technically it
is not quite 720p.
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Real-world Benchmark Test Details
- Eset NOD32: In-depth virus scan of a folder containing 32 files
of varying size, several of which are archives with many files within
them.
- WinRAR: Archive creation with a folder containing 68 files
of varying size (less than 50MB).
- iTunes: Conversion of an MP3 file to AAC (48KHz, 256kbps).
- TMPGEnc Xpress: Encoding a 1-minute long XVID AVI file to VC-1
(1280x720, 30fps, 20mbps).
Our first test procedure is designed to determine the overall AC system power
consumption at various states. To stress CPUs we use Prime95 (large FFTs setting)
and to stress the IGP, we use FurMark, an OpenGL benchmarking and stability
testing utility.
Next we run the system through a video test suite featuring a variety of high
definition clips. During playback, a CPU usage graph is created by the Windows
Task Manger for analysis to determine the average CPU usage. High CPU usage
is indicative of poor video decoding ability. If the video (and/or audio) skips
or freezes, we conclude the IGP (in conjunction with the processor) is inadequate
to decompress the clip properly. Power consumption during playback of high definition
video is also recorded.
Lastly, we run a short series of performance benchmarks — a few real-world
applications as well as synthetic tests.
All nonessential pre-installed software is removed prior to
testing, and certain services and features like Indexing, Superfetch, and
System Restore are disabled to prevent them from affecting our results.
Aero glass is left enabled if supported. All tests are conducted with WiFi
disabled and screen brightness set to a reasonable level, unless otherwise
noted. We also make note if energy saving features like Cool'n'Quiet and
SpeedStep do not function properly.
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