Power Supply and Noise Requirements. Efficiency of the power supply is a problem for sleeping states. Implementing a power supply with increased efficiency can further reduce heat and ease the thermal design issues. This, of course, requires an accurate understanding of the load during Sleep state. Alternatively, a fan control can be implemented using the ACPI thermal model.
Vibrations caused by airflow through the case is another major contributor to audible noise.
To meet OnNow goals and reduce audible noise, the enclosure might need to be redesigned to route air more efficiently and to reduce vibrations. All rights reserved. Terms of Use.