Deep Sleep state

Deep Sleep state is a low-power state supported by many modern x86 microprocessors. In this state the CPU core maintains its context, core's internal clock and the clock of L2 cache are stopped, and the core may not respond to interrupts and other signals. This state is always entered from Sleep state. In some CPU families, like Pentium III Tualatin and Coppermine processors, Deep Sleep state is the lowest power-saving state. In other, more modern families, the CPU may transition from this state to Deeper Sleep mode which has even lower power consumption.

Deep Sleep state provides better power savings than the Sleep state, but transition time from this state to normal operation mode is even slower than for the Sleep state.