HP Workstation x4000 Specifications download pdf (Page 89)

Power Speciﬁcations

Power Saving and Ergonometry

Chapter 6 89

Power Saving and Ergonometry

Depending on the operating system, the following power management

modes are available:

• Full on (S0)

• Standby (S1)

• Hibernate (S4)

• Full off (S5)

NOTE Windows NT 4.0 does not support S1 or S4.

Using Power Management

Power management lets you reduce the Workstation’s overall power

consumption by slowing down the Workstation’s activity when it is idle.

Operating systems differ in their power management capabilities. In

Windows 2000, you can select from two power management modes:

• Stand By (S1) is a low power state where the processor is shut off, but

memory remains powered. Waking up the Workstation from Stand By

mode is faster than from Hibernate mode because the RAM contents

do not need to be restored. However, when the Workstation is in

Stand By mode, it consumes more power than Hibernate mode

because the memory remains powered.

• Hibernate (S4) makes the machine look and behave like it is off

except that it remembers the state it was in before hibernation and

can be awakened without a full operating system boot. This is

because the operating system copies the RAM contents out to a

special location on the hard disk before entering hibernation.

You must enable Hibernate mode through Power Options in the

Control Panel before it can be a shut down option.

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HP Workstation x4000 Specifications Page 89