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TEST METHODOLOGY
Common Test Platform:
Intel:
AMDs:
Measurement and Analysis Tools
- CPU-Z
to monitor CPU frequency and voltage.
- CPUBurn
K7
processor stress software.
- Prime95
processor stress software.
- Cyberlink
PowerDVD to play H.264/VC-1/Blu-ray video.
- Eset NOD32 as
an anti-virus benchmark.
- WinRAR as an
archiving benchmark.
- iTunes
an audio encoding benchmark.
- TMPGEnc
Xpress as a video encoding benchmark.
- PCMark05
as a general system benchmark.
- 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.
Benchmark Test Details
- Eset NOD32: In-depth virus scan of a folder containing 32 files of
varying size with many of them being file RAR and ZIP archives.
- WinRAR: Archive creation with a folder containing 68 files of varying
size (less than 50MB).
- iTunes: Conversion of an MP3 file to AAC.
- TMPGEnc Xpress: Encoding a 1-minute long XVID AVI file to VC-1 (1280x720,
30fps, 20mbps).
Our testing procedure is designed to determine the overall system power consumption
at various states (measured using a Seasonic Power Angel). To stress CPUs we
used Prime95 (large FFTs setting) or CPUBurn (which produced the higher power
draw). We also performed a short series of benchmarks featuring real-world timed
tests and synthetics.
Cool'n'Quiet and/or Intel SpeedStep were 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
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