Power Supply Considerations; Thermal Considerations - Intel D845GEBV2 - OCTOBRE 2002 Manual

2.11.5 Power Supply Considerations

CAUTION
The +5 V standby line for the power supply must be capable of providing adequate +5 V standby
current. Failure to do so can damage the power supply. The total amount of standby current
required depends on the wake devices supported and manufacturing options. Refer to
Section 2.11.3 on page 78 for additional information.
System integrators should refer to the power usage values listed in Table 42 when selecting a
power supply for use with the Desktop Board D845GEBV2 or D845GERG2.
Measurements account only for current sourced by the Desktop Board D845GEBV2 or
D845GERG2 while running in idle modes of the started operating systems.
Additional power required will depend on configurations chosen by the integrator.
The power supply must comply with the following recommendations found in the indicated
sections of the ATX form factor specification.
•
The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2)
•
The current capability of the +5 VSB line (Section 4.2.1.2)
•
All timing parameters (Section 4.2.1.3)
•
All voltage tolerances (Section 4.2.2)
For information about
The ATX form factor specification

2.12 Thermal Considerations

CAUTION
The use of an Intel Pentium 4 processor operating above 2.80 GHz with this Intel desktop board
requires the following:
•
A chassis with appropriate airflow to ensure proper cooling of the components on the board
•
A processor fan heatsink that meets the thermal performance targets for Pentium 4 processors
operating above 2.80 GHz
Failure to ensure appropriate airflow may result in reduced performance of both the processor
and/or voltage regulator or, in some instances, damage to the desktop board. For a list of chassis
that have been tested with Intel desktop boards please refer to the following website:
http://developer.intel.com/design/motherbd/cooling.htm
All responsibility for determining the adequacy of any thermal or system design remains solely
with the reader. Intel makes no warranties or representations that merely following the
instructions presented in this document will result in a system with adequate thermal performance.
Technical Reference
Refer to
Section 1.5, page 20
81