Intel BX80605X3440 - Quad Core Xeon X3440 Reference page 57

Sensor Based Thermal Specification Design Guidance
• When DTS
versus RPM to achieve the necessary level of cooling.
Ψ
CA
This chapter will discuss two implementations. The first is a FSC system that is not
provided the T
current T
acoustic benefit by operating the processor closer to the thermal profile. But only the
T
AMBIENT
performance.
In the development of the FSC algorithm it should be noted that the T
expected to change at a significantly slower rate than the DTS value. The DTS value will
be driven by the workload on the processor and the thermal solution will be required to
respond to this much more rapidly than the changes in T
An additional consideration in establishing the fan speed curves is to account for the
thermal interface material performance degradation over time.
Thermal/Mechanical Specifications and Design Guidelines
i s a bove T
CONTROL
information and a FSC system that is provided data on the
AMBIENT
. Either method will result in a thermally compliant solution and some
AMBIENT
aware FSC system can fully use the specification for optimized acoustic
, FSC algorithms will use knowledge of T
AMBIENT
is
AMBIENT
.
AMBIENT
and
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