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disconnected before the measurement is recorded. If the keyboard remained
connected, an additional current consumption of approximately 10 mA is noticed.
Each module was measured while running Windows XP Professional with SP2 (service
pack 2) and the “Power Scheme” was set to “Portable/Laptop”. This setting ensures that
Pentium M processors reduce their output during desktop idle. Celeron M processors do
not support this feature and therefore run at full speed even during desktop idle. The
screen resolution was set to 800x600 32bit High Color. Each module was tested while
using a swissbit
®
DDR2 PC2-4200-444 512MB
memory module. Using different sizes of
RAM will cause slight variances in the measured results. Power consumption values
were recorded during the following stages:
Windows XP Professional SP2
•
Desktop Idle (1000MHz for Intel
®
Core™ Duo L2400 1.66GHz)
•
100% CPU workload (see note below)
•
Windows XP Professional Standby Mode (requires setup node “Suspend Mode” in
the BIOS to be configured to S1 POS (Power On Suspend))
•
Suspend to RAM (requires setup node “Suspend Mode” in BIOS to be configured to
S3 STR (Suspend to RAM))
Note
A software tool was used to stress the CPU to 100% workload.
Processor Information
In the following power tables there is some additional information about the processors.
Intel
®
offers processors that are considered to be low power consuming. These
processors can be identified by their voltage status. Intel uses the following terms to
describe these processors. If none of these terms are used then the processor is not
considered to be low power consuming.
LV=Low voltage
ULV=Ultra low voltage
When applicable, the above mentioned terms will be added to the power tables to
describe the processor. For example:
Intel
®
Core™ Duo L2400 1.66GHz 2MB L2 cache
LV
90nm
Intel
®
also describes the type of manufacturing process used for each processor. The
following term is used:
nm=nanometer
The manufacturing process description is included in the power tables as well. See
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