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For desktop and single processor server and workstation processors system
temperature monitoring and fan speed control management purpose, the PECI 3.0
commands that are commonly implemented includes:
• Ping()
• GetDIB()
• GetTemp()
• RdPkgConfig() to get:
— IA32_TEMPERATURE_TARGET MSR
— T
— TDP
See the
Chapter 7
6.3.2
PECI Client Capabilities
The Intel
3930K processor, and Intel
functions:
• Processor and DRAM thermal management
• Platform manageability functions including thermal, power and electrical error
monitoring
See the
Chapter 7
6.4
Fan Speed Control with Digital Thermal Sensor
Processor fan speed control is managed by comparing DTS temperature data against
the processor-specific value stored in the static variable, T
temperature data is less than T
speed of the thermal solution fan. This remains the same as with the previous guidance
for fan speed control. Refer to
data exceeds T
The DTS temperature data is delivered over PECI, in response to a GetTemp()
command, and reported as a relative value to TCC activation target. The temperature
data reported over PECI is always a negative value and represents a delta below the
onset of thermal control circuit (TCC) activation, as indicated by the PROCHOT# signal.
Therefore, as the temperature approaches TCC activation, the value approaches zero
degrees.
52
CONTROL
for the PECI command details.
®
Core™ i7-3960X, i7-3970X processor Extreme Edition, Intel
®
Core™ i7-3820 processor support the following sideband
for the PECI command details.
CONTROL
Section 6.1.3
.
CONTROL
Thermal Management Specifications
CONTROL
, the fan speed control algorithm can reduce the
for guidance where the DTS temperature
§
Thermal/Mechanical Specifications and Design Guide
®
Core™ i7-
. When the DTS
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