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PACS
2004
Springer

Power Consumption Breakdown on a Modern Laptop

14 years 4 months ago
Power Consumption Breakdown on a Modern Laptop
The purpose of this work was to obtain a componentwise breakdown of the power consumption a modern laptop. We measured the power usage of the key components in an IBM ThinkPad R40 laptop using an Agilent Oscilloscope and current probes. We obtained the power consumption for the CPU, optical drive, hard disk, display, graphics card, memory, and wireless card subsystems--either through direct measurement or subtractive measurement and calculation. Moreover, we measured the power consumption of each component for a variety of workloads. We found that total system power consumption varies a lot (8 W to 30 W) depending on the workload, and moreover that the distribution of power consumption among the components varies even more widely. We also found that though power saving techniques such as DVS can reduce CPU power considerably, the total system power is still dominated by CPU power in the case of CPU intensive workloads. The display is the other main source of power consumption in a lap...
Aqeel Mahesri, Vibhore Vardhan
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where PACS
Authors Aqeel Mahesri, Vibhore Vardhan
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