Intel Intel Core2 Extreme QX6850 HH80562XJ0808M Data Sheet
Product codes
HH80562XJ0808M
Datasheet
71
Thermal Specifications and Design Considerations
5
Thermal Specifications and
Design Considerations
5.1
Processor Thermal Specifications
The processor requires a thermal solution to maintain temperatures within the
operating limits as set forth in
. Any attempt to operate the processor
outside these operating limits may result in permanent damage to the processor and
potentially other components within the system. As processor technology changes,
thermal management becomes increasingly crucial when building computer systems.
Maintaining the proper thermal environment is key to reliable, long-term system
operation.
A complete thermal solution includes both component and system level thermal
management features. Component level thermal solutions can include active or passive
heatsinks attached to the processor Integrated Heat Spreader (IHS). Typical system
level thermal solutions may consist of system fans combined with ducting and venting.
For more information on designing a component level thermal solution, refer to the
Intel
®
Core™2 Extreme Quad-Core Processor QX6800 TMDG.
Note:
The boxed processor will ship with a component thermal solution. Refer to
for details on the boxed processor.
5.1.1
Thermal Specifications
To allow for the optimal operation and long-term reliability of Intel processor-based
systems, the system/processor thermal solution should be designed such that the
processor remains within the minimum and maximum case temperature (T
C
)
specifications when operating at or below the Thermal Design Power (TDP) value listed
. Thermal solutions not designed to provide this level of
thermal capability may affect the long-term reliability of the processor and system. For
more details on thermal solution design, refer to the Intel
®
Core™2 Extreme Quad-
Core Processor QX6800 TMDG.
The processor uses a methodology for managing processor temperatures which is
intended to support acoustic noise reduction through fan speed control. Selection of the
appropriate fan speed is based on the relative temperature data reported by the
processor’s Platform Environment Control Interface (PECI) bus as described in
. The temperature reported over PECI is always a negative value and
represents a delta below the onset of thermal control circuit (TCC) activation, as
indicated by PROCHOT# (see
). Systems that implement fan speed control
must be designed to take these conditions in to account. Systems that do not alter the
fan speed only need to guarantee the case temperature meets the thermal profile
specifications.
In order to determine a processor's case temperature specification based on the
thermal profile, it is necessary to accurately measure processor power dissipation. Intel
has developed a methodology for accurate power measurement that correlates to Intel
test temperature and voltage conditions. Refer to the Intel
®
Core™2 Extreme Quad-
Core Processor QX6800 TMDG.
The case temperature is defined at the geometric top center of the processor. Analysis
indicates that real applications are unlikely to cause the processor to consume
maximum power dissipation for sustained time periods. Intel recommends that