Intel 9130M NE80567KF0288M User Manual

91

This chapter provides the thermal specifications of the Intel Itanium processor 9300 
series.

The Intel Itanium processor 9300 series implements power and thermal management. 
The Intel Itanium processor 9300 series power management system is built from four 
subsystems or components. These are power measurement components, the 
temperature measurement components, the frequency control components and the 
voltage control components that work in concert to maximize performance within a 
given power and thermal envelope.

The Intel Itanium processor 9300 series have internal thermal sensors which sense 
when a certain temperature is reached on the processor core. These sensors are used 
to control various thermal states. 

 shows an approximate relationship 

between temperature, time, and the THERMALERT, TCONTROL, PROCHOT, 
THERMWARN, and THERMTRIP points.

 is not intended to show an exact relationship in time or temperature as a 

processor's thermal state advances from one state to the next state. Cooling solution 

performance degradation and processor workload variations will affect the processor 

thermal state. 

The Intel Itanium processor 9300 series uses a thermal sensing device called Digital 
Thermometer (DT) to read the values from the thermal sensors available on the 
processor die. The DT also compares these values to a thermal trip point that is hard-
wired. Calibration information is used to translate the DT output to processor 
temperature in degrees Celsius relative to the PROCHOT setpoint. DT readout is 

Tim e

P R O C H O T

T H E R M W A R N

T H E R M T R IP

T H E R M A LE R T

T

RE

LAT

IVE

_

T

E

M

P

M a x  O p e ratin g   T e m p e ra tu re