Hyper-Threading Technology; Energy Star Compliance - HP xw4200 Overview

ENERGY STAR Compliance

HP products purchased with the ENERGY STAR configuration are compliant with the U.S.
Environmental Protection Agency (EPA) ENERGY STAR Computers Program. The EPA ENERGY STAR
configuration does not imply endorsement by the EPA. As an ENERGY STAR Partner, HP has
determined that products with the ENERGY STAR configuration meet the ENERGY STAR guidelines
for energy efficiency.
The ENERGY STAR Computers Program was created by the EPA to promote energy efficiency and
reduce air pollution through more energy-efficient equipment in homes, offices, and factories. HP
products achieve this by reducing the power consumption when not being used.
ENERGY STAR on HP Workstations uses ACPI power management. The system can wake as a result
of a user action (keyboard or mouse) or from the network or a modem.
The Power Management feature, when used in conjunction with an external ENERGY STAR-compliant
monitor, will support the power-down features of the monitor. The Power Management feature allows an
external monitor to go into low-power mode when the energy save timeout occurs.
CAUTION Using the Energy Save Monitor feature with non-ENERGY STAR compliant monitors might
cause video distortion when the Energy Save timeout occurs.

Hyper-Threading Technology

Hyper-Threading Technology is a high-performance technology, developed by Intel®, that enables a
single processor to execute multiple threads of instructions simultaneously. Hyper-Threading Technology
enables the processor to utilize its execution resources more efficiently, delivering performance
increases and improving user productivity. Not all systems benefit from the Hyper-Threading Technology.
To see if Hyper-Threading Technology can benefit you, test your system by turning the feature on.
Computer Setup (F10) can be used to turn this feature on. To do this, run F10 Setup during boot up and
select Advanced>Device Options>Hyper-Threading, and enable the Hyper-Threading Technology.
NOTE If your workstation does not support Hyper-Threading Technology, the Hyper-Threading menu
item will not be available on the Computer Setup menu.
NOTE The Hyper-Threading Technology is recommended for use with Windows XP systems. This
technology is detected by the system and is turned on in the operating system after it is enabled in the
system BIOS.
NOTE Red Hat Enterprise Linux WS 3 supports Hyper-Threading Technology. An SMP-capable kernel
must be installed on your system before this technology can be utilized.
For more information about the Hyper-Threading Technology, visit the Intel Web site at
http://www.intel.com.
HYPER-THREADING TECHNOLOGY 25