HP Business Desktops BIOS
environments. However, the user configurable speed does not compromise the thermal protection
the computer environment. The HP BIOS will adjust air flow to necessary levels when computer
conditions require additional cooling regardless of the user settings. Through careful analysis an
testing, the HP BIOS minimizes unnecessary fan noise for better idle acoustics and meticulously
controls fan ramps to prevent overheating with smooth fan speed transitions.
The HP BIOS also provides thermal alerts to remote management consoles wh
over
d
en the computer
n
d
nt
Saving power and money
n are important concerns of the business client. The HP BIOS provides
temperature rises to cautionary or critical levels. With this information, system administrators ca
adjust computer settings or environmental conditions to eliminate thermal concerns before they
become real problems. Combined with the HP Business Desktop computer thermal hardware an
cooling components, the HP BIOS plays an active and key roll in controlling the thermal environme
and acoustics for a better overall Total Customer Experience (TCE).
Power cost and consumptio
robust power management functionalities and can help address these concerns. Using the industry-
standard Advanced Configuration and Power Interface Specification (see ACPI specifications at
http://www.acpi.info/spec.htm), the HP BIOS enables the operating system to control the compu
power level safely and efficiently. The HP BIOS helps the business customer safely enable lower
power management states. This functionality allows individual subsystems and peripherals to ente
low power or off states without affecting other elements of the system.
The HP BIOS offers a wide range of configurable power management options to m
ter’s
r
eet the customer’s
• S1—Standby state resulting in the processor being halted, but context is not lost. All other devices
• dby state known as Suspend to RAM. All devices in the system are powered down, except
• ory content is saved to the hard
• mputer is off. This state offers the slowest
To understand the cost savings, consider an example using the power difference between enabling
average
uter users will also not power off their systems at the end of the work day due to the
vailable.
a key component in achieving power management accreditations such as
unique needs. The ACPI defines several system states described below, all of which HP supports:
remain at the normal power state. This state offers the fastest wakeup time and the lowest power
savings.
S3—Stan
for computer memory. Recovery is almost instant (approximately 2 to 3 seconds) and power
consumption is very low (typically <5W).
S4—This state is referred to as Hibernation. The computer’s mem
drive, then most power is removed from the system.
S5—This state is often referred to as Soft Off. The co
wakeup time and the greatest power savings (typically <2W).
Suspend to RAM (system power dissipation is under 5W) versus simply allowing a system to idle
(system power dissipation is approximately 90W in a mainstream Pentium4 configuration). In this
scenario, assume users simply let their system idle when they are not working. Calculate the cost
savings during after-work hours (5pm to 8am) in an enterprise with 1000 systems. Saving
approximately 80W for 15 hours/day at an average energy cost of 12 cents/kWh, for an
work year of 250 days, would result in a cost savings of $36,000.00 annually for an installation of
1000 systems.
Typically, comp
inconvenience of waiting for the system to power up and complete the initial loading of their
operating system. In the Suspend-to-RAM state, HP Business Desktop computers are instantly a
Users can touch the mouse, keyboard, or power button and have the unit ready for interaction in
approximately 2 seconds.
The HP BIOS has also been
Energy Star, Blue Angel, and Federal Energy Management Program (FEMP) Standby Power
compliance (refer to
http://www.eere.energy.gov/femp for more information on the FEMP).
software image (operating system and applications) and the HP BIOS provide a cohesive power
Both the
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