Intel Pentium 4 Processor in the 478-PinPackage at 1.40 GHz, 1.50 GHz, 1.60 GHz, 1.70 GHz, 1.80 GHz, 1.90 GHz, and 2GHz

Thermal Specifications and Design Considerations
Datasheet 79
6.1 Thermal Specifications
Table 33 specifies the thermal design power dissipation envelope for Pentium 4 processor
in the 478-pin package. Analysis indicates that real applications are unlikely to cause the
processor to consume the maximum possible power consumption. Intel recommends that
system thermal designs target the “Thermal Design Power” indicated in Table 33 instead
of “Max Processor Power.” The Thermal Monitor feature (refer to Section 7.3) is designed
to help protect the processor from overheating while executing high power code that
exceeds the recommendations in this table. For more details on the usage of this feature,
refer to Section 7.3. To ensure maximum flexibility, systems should be designed to the
Flexible Motherboard guidelines, even if a processor with a lower thermal dissipation is
planned.
In all cases the Thermal Monitor feature must be enabled for the processor
to be in specification.
Table 33 also lists the maximum and minimum processor
temperature specifications for T
CASE
. A thermal solution must be designed to ensure the
temperature of the processor does not exceed these specifications.
NOTES:
1. These values are specified at V
CC_MAX
for the processor. The processor should not be subjected to any
static Vcc and Icc combination wherein Vcc exceeds V
CC_MAX
for a given current.
2. The numbers in this column reflect Intel’s recommended design point and are not indicative of the maximum
power the processor can dissipate under worst conditions. For more details refer to the Intel® Pentium® 4
Processor in the 478-pin Package Thermal Design Guidelines.
3. Some processors at this frequency have special specifications. These parts are distinguishable by their S-
Spec number. Refer to the Supplement to the Intel(R) Pentium(R) 4 Processor Specification Update for the
detailed specifications and for the specific S-Specs associated with these differing specifications.
6.2 Thermal Analysis
6.2.1 Thermal Solution Performance
Refer to the Intel® Pentium® 4 Processor in the 478-pin Package Thermal Design
Guidelines.
Table 33. Pentium® 4 Processor in the 478-pin Package Thermal Design Power
Processor and
Core Frequency
(GHz)
Thermal Design
Power
2
(W)
Minimum
T
CASE
(°C)
Maximum
T
CASE
(°C)
Notes
1
1.40 GHz 55.3 5 72
1.50 GHz 57.9 5 73 3
1.60 GHz 60.8 5 75
1.70 GHz 63.5 5 76 3
1.80 GHz 66.1 5 77
1.90 GHz 72.8 5 75
2 GHz 75.3 5 76