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Lenovo ThinkPad Edge 13:
Samsung N220: idle CPU-Z screenshot .
Samsung N220: load CPU-Z screenshot.
Measurement and Analysis Tools
Samsung N220: device listing.
H.264/VC-1 Video 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 with hardware acceleration turned
1080p | 24fps | ~10mbps
1080p | 24fps | ~8mbps
x264/MKV Video Test Clips
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 clips were taken from two longer videos
the most demanding one minute portions were used. To play them we use Media
Player Classic Home Cinema which by default utilizes DXVA (DirectX Video
Acceleration) with supported GPUs. For graphics chips that do not support
hardware acceleration for either codec, the software decoder CoreAVC is
used to render using CPU power alone.
720p | 24fps | ~11mbps
x264 720p: Undead Battle is a 720p x264 clip encoded from
the Blu-ray version of a major motion picture. It features a battle
between undead warriors.
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.
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 GPU struggle with Flash in HD. Our test clip is a
HD movie trailer from YouTube played in Firefox.
1280x544 | 25fps | ~2mbps
Flash HD 720p: 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.
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,
Our first test procedure is designed to determine the overall system power
consumption at various states (measured using a Seasonic Power Angel). To stress
CPUs we use either Prime95 (large FFTs setting) or CPUBurn depending on which
produces higher system power consumption. To stress the GPU, we use ATITool
or FurMark, which ever application is more power demanding.
Our second test procedure is to 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 GPU (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 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 (as well as other wireless connectivity
features) unless necessary, and screen brightness is 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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