Intel Celeron D User Manual

Intel
®
Celeron
®
D Processor in the 775-Land LGA Package Thermal Design Guide13
Order #303730
Processor Thermal/Mechanical Information
To determine compliance to the thermal profile, a measurement of the actual processor power
dissipated is required. The measured power is plotted on the Thermal Profile to determine the
maximum case temperature. Using the example in Figure 3, a power dissipation of 70 W has a case
temperature of 61 °C. Contact your Intel sales representative for assistance in processor power
measurement.
For the Intel Celeron D Processor in the 775-Land LGA Package, there are two thermal profiles to
consider. The Platform Requirement Bit (PRB) indicates which thermal profile is appropriate for a
specific processor. This document will focus on the development of thermal solutions to meet the
thermal profile for PRB=1. See the processor datasheet for the thermal profile and additional
discussion on the PRB.
2.2.3 T
CONTROL
.
T
CONTROL
defines the maximum operating temperature for the on-die thermal diode when the
thermal solution fan speed is being controlled by the on-die thermal diode. The T
CONTROL
parameter
defines a very specific processor operating region where the T
C
is not specified. This parameter
allows the system integrator a method to reduce the acoustic noise of the processor cooling
solution, while maintaining compliance to the processor thermal specification.
The value of T
CONTROL
is driven by a number of factors. One of the most significant of these is the
processor idle power. As a result a processor with a high T
CONTROL
will dissipate more power than a
part with lower value of T
CONTROL
when running the same application.
The value of T
CONTROL
is calculated such that regardless of the individual processor’s T
CONTROL
value the thermal solution should perform similarly. The higher leakage of some parts is offset by a
higher value of T
CONTROL
in such a way that they will behave virtually the same acoustically
Figure 3. Example Thermal Profile
30
35
40
45
50
55
60
65
70
75
30 40 50 60 70 80 90 100 110
Watts
Case Temperature (C)
Thermal Profile
FMB2
Heatsink
Design Point

Intel Celeron D Specifications

General

Brand	Intel
Model	Celeron D
Category	Computer Hardware
Language	English