Windows 7 Power Management PDF User Manual
Reduced Power Consumption 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.
Device Power Management Windows 7 provides enhanced device power management. It enables low-power modes across several technologies, including Adaptive Display Brightness, Smart Network Power, and other device classes. The following sections describe these improvements.
Low-Power Audio Windows 7 supports the latest Intel HD Audio low-power specification. This specification introduces a fourth power state D3Cold which is defined as the lowest unresponsive power state that a codec can go into yet still wake up. The Windows 7 HD Audio Class Driver takes advantage of this power state to further conserve power when an audio device is not in use. Windows 7 also supports USB audio-class selective suspend, which reduces the complexity of platform integration for array microphone and USB Web camera solutions. Support for selective suspend in audio-class devices helps make USB-based solutions possible without significantly affecting battery life.
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windows 7 user manualMay 2, 2009 | Posted in Software
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