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TEST METHODOLOGY
Test Setup:
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CPU-Z screenshot: Phenom II X3 720 Black Edition.
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System device listing.
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Measurement and Analysis Tools
- CPU-Z
to monitor CPU frequency and voltage.
- CPUBurn
K7
processor stress software.
- Prime95
processor stress software.
- FurMark
stability test to stress the integrated GPU.
- Cyberlink
PowerDVD to play video.
- SpeedFan
to monitor temperature and fan speeds.
- Seasonic
Power Angel AC power meter, used to measure the power consumption
of the system.
- Custom-built, four-channel variable DC power supply, used to regulate
the CPU fan speed.
Our main 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 K7 depending on which produces
higher system power consumption. To stress the IGP, we use FurMark, an OpenGL
benchmarking and stability testing utility. Power consumption during playback
of high definition video is also recorded.
Cool'n'Quiet was enabled (unless otherwise noted). The following features/services
were disabled during testing to prevent spikes in CPU/HDD usage that are typical
of fresh Vista installations:
- Windows Sidebar
- Indexing
- Superfetch
Video Test Suite
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