Asus R2E User Manual download pdf (Page 29)

UltraMobilePC

Power Management Modes

The UltraMobilePC has a number of automatic or adjustable power saving features that you can

use to maximize battery life and lower Total Cost of Ownership (TCO). You can control some

of these features through the Power menu in the BIOS Setup. ACPI power management settings

are made through the operating system. The power management features are designed to save as

much electricity as possible by putting components into a low power consumption mode as often

as possible but also allow full operation on demand.

Sleep and Hibernate

Power management settings can be found in the Windows >

Control Panel > Power Options. In System Settings, you can

dene “Sleep/Hibernate” or “Shut Down” for closing the display

panel or pressing the power button. “Sleep” and “Hibernate”

saves power when your UltraMobilePC is not in use by turning

OFF certain components. When you resume your work, your

last status (such as a document scrolled down half way or email

typed half way) will reappear as if you never left. “Shut Down”

will close all applications and ask if you want to save your work

if any are not saved.

Sleep is the same as Suspend-to-RAM (STR). This function stores

your current data and status in RAM while many components are

turned OFF. Because RAM is volatile, it requires power to keep

(refresh) the data. Click the Start button and the arrowhead next

to the lock icon to see this option. (NOTE: The power indicator

will blink in this mode.)

Hibernate is the same as Suspend-to-Disk (STD) and stores your current data and status on the

hard disk drive. By doing this, RAM does not have to be periodically refreshed and power con-

sumption is greatly reduced but not completely eliminated because certain wake-up components

like LAN needs to remain powered. “Hibernate” saves more power compared to “Sleep”. Click

the Start button and the arrowhead next to the lock icon to see this option. Recover by pressing

the power button. (NOTE: The power indicator will be OFF in this mode.)

Thermal Power Control

There are three power control methods for controlling the UltraMobilePC’s thermal state. These pow-

er control cannot be congured by the user and should be known in case the UltraMobilePC should

enter these states. The following temperatures represent the chassis temperature (not CPU).

• The fan turns ON for active cooling when the temperature reaches the safe upper limit.

• The CPU decreases speed for passive cooling when the temperature exceeds the

safe upper limit.

• The system shut down for critical cooling when temperature exceeds the maximum

safe upper limit.

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Asus R2E User Manual Page 29