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Download free Windows 7 Power Management.pdf Microsoft designed Windows 7 with a strong focus on reducing the overall power consumption by investing in key areas of the platform including performance optimizations, idle resource utilization, device power management, and key end-user scenarios.

Energy efficiency requires investments across the entire platform, not only in the core hardware or in the operating system. While Windows 7 can have a significant impact on platform energy efficiency, attached devices, and non-Microsoft and end-user applications, other platform extensions often have a larger total impact. The complexity and quantity of platform extensions require a broad approach to energy efficiency beyond focusing on a single component in the platform.

In addition to core investments in Windows 7, Microsoft has emphasized ecosystem engagements for energy efficiency. Ecosystem partners, including IT pros, may leverage Windows 7 technical documentation, built-in diagnostic tools, and rich performance analysis tools to help identify issues across the enterprise.

Idle efficiency is critical for the overall battery life of a PC because idle time dominates most scenarios. Reducing idle power consumption reduces the base power consumption. For example, if a portable computer uses 12 watts when the system is idle, all other scenarios increase power by some amount over the base 12 watts. Reducing idle power consumption benefits all other end-user workloads and scenarios, from DVD playback to office productivity

Reducing idle power consumption can be achieved by reducing the resource utilization of the system when it is idle. It can also be achieved by enabling the hardware to go into lower power states during long periods of inactivity.

Resource utilization includes the processor, disk, memory, and network activity on the system. Windows 7 helps improve efficiency by reducing resource utilization when the system is idle. Reducing processor activity is particularly critical because of the large dynamic range of power consumption in modern processors. The typical portable computer processor consumes nearly 0 watts when idle, but it can consume up to 35 watts when fully utilized.

here Windows 7 Power Management

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