White Papers

 S0 state is the working state where the dynamic RAM is maintained and is read/

write by the processor.

 S1 state is a low wake-up latency sleeping state. In this state, no system context is

lost (CPU or chip set) and hardware maintains all system contexts.

 S3 is called “suspend to RAM” state or stand-by mode. In this state the dynamic

RAM is maintained. Dell systems will be able to go to S3 if the OS and the

peripherals used in the system supports S3 state. Windows XP, Windows Vista and

Windows 7 all support S3 state.

 S4 is called “suspend to disk” state or “hibernate” mode. There is no power. In this

state, the dynamic RAM is not maintained. If the system has been commanded to

enter S4, the OS will write the system context to a non-volatile storage file and

leave appropriate context markers. When the system is coming back to the

working state, a restore file from the non-volatile storage can occur. The restore

file has to be valid. Dell systems will be able to go to S4 if the OS and the

peripherals support S4 state. Windows 7 and Windows 8.1 support S4 state.

 S5 is the “soft” off state. There is no power. The OS does not save any context to

wake up the system. No data will remain in any component on the system board,

i.e. cache or memory. The system will require a complete boot when awakened.

Since S5 is the shut off state, coming out of S5 requires power on which clears all

registers.

The Dell Precision 5820/7820/7920 Tower supports all of the above states, except S1.

Please direct any questions to the undersigned

Very truly yours;

Dell Marketing L.P.

Statement of Volatility – Dell Precision 5820/7820/7920 Tower