Lenovo (singapore) Pte. Ltd.

Gordon B Grout

Kobina Kweenu Inkumsah

Nicholas J Balogh

Robert H Johnson, Jr

Mark R Vanderwiel

If a total output power provided to a computer is less than a minimum of a power capacity range around a power use efficiency peak, and the occurrence of the total output power being less than the minimum value occurs more than a first threshold number of times within a time period, a first action is performed that causes the total output power provided to the computer to change to exceed the minimum of the power capacity range. If the total output power provided to the computer is greater than a maximum of the power capacity range, and the occurrence of the total output power being greater than the maximum occurs more than a second threshold number of times within the time period, a second action is performed that causes the total output power provided to the computer to change to be less than the maximum of the power capacity range.

Changing output power to be within a range based on a power use efficiency peak

A method of determining a condition of a filter located within a system is provided. The method may include determining a first air flow measurement value for a first air flow through the filter, determining a first energy consumption value associated with generating the first air flow through the filter, determining a first ratio between the first air flow measurement value and the first energy consumption value, determining a second air flow measurement value for a second air flow through the filter, determining a second energy consumption value associated with generating the second air flow through the filter, and determining a second ratio between the second air flow measurement value and the second energy consumption value. The filter may then be replaced based on a comparison between the determined first and the determined second ratio.

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Rochester, MN, United States of America

Gordon B Grout