![]() ![]() States S1, S2, S3, and S4 are sleeping states, in which the computer appears off because of reduced power consumption but retains enough context to return to the working state without restarting the operating system. System hardware context (such as the content of volatile processor registers, memory caches, and RAM): how much system hardware context is retained? Must the operating system reboot to return to the working state?.Hardware latency: how long does it take to return the computer to the working state?.Software resumption: from what point does the operating system restart?.Power consumption: how much power does the computer use?.Each state is characterized by the following: The operating system supports six system power states, referred to as S0 (fully on and operational) through S5 (power off). System power states describe the power consumption of the system as a whole. There are also variations of these states, such as hybrid sleep and fast startup. However, the system supports multiple power states that correspond to the power states defined in the Advanced Configuration and Power Interface (ACPI) specification. To the user, the system appears to be either on or off. ![]() ![]() How to See Sleep States Available on your Windows 10 PC ![]()
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