Intel III 866 MHz 80526PZ866256 User Manual
Product codes
80526PZ866256
56
Datasheet
Pentium
®
III Processor for the PGA370 Socket at 500 MHz to 1.10 GHz
4.0
Thermal Specifications and Design Considerations
This chapter provides needed data for designing a thermal solution. However, for the correct
thermal measuring processes, refer to AP-905, Intel
thermal measuring processes, refer to AP-905, Intel
®
Pentium
®
III
Processor Thermal Design
Guidelines
(Document Number 245087). The Pentium
III
processor uses flip chip pin grid array
packaging technology and has a junction (T
junction
) or case temperature (T
case
) specified.
4.1
Thermal Specifications
Table 30
provides the thermal design power dissipation and maximum temperatures for the
Pentium
III
processor for the PGA370 socket. Systems should design for the highest possible
processor power, even if a processor with a lower thermal dissipation is planned. A thermal
solution should be designed to ensure the junction temperature never exceeds these specifications.
solution should be designed to ensure the junction temperature never exceeds these specifications.
NOTES:
1. These values are specified at nominal V
CC
CORE
for the processor pins.
Table 30. Intel
®
Pentium
®
III Processor Thermal Design Power for the FC-PGA Package
1
Processor
Processor
Core
Frequency
(MHz)
System
Bus
Frequency
(MHz)
Processor
Thermal
Design
Power
2,3
up to
CPUID
0686h
(W)
Processor
Thermal
Design
Power
2,3
CPUID
068Ah
(W)
Power
Density
5
for
CPUID
068Ah
(W/cm
2
)
Maximum
T
JUNCTION
10
(°C)
T
JUNCTION
Offset for
Latest
Stepping
4,6
(°C)
500E
500
100
13.2
N/A
N/A
85
1.9
533EB
533
133
14.0
N/A
N/A
85
2.0
550E
550
100
14.5
N/A
N/A
85
2.1
600E
600
100
15.8
19.6
30.5
82
2.6
600EB
600
133
15.8
N/A
N/A
82
2.3
650
650
100
17.0
N/A
N/A
82
2.7
667
667
133
17.5
N/A
N/A
82
2.8
700
700
100
18.3
21.9
34.1
80
2.9
733
733
133
19.1
22.8
35.5
80
3.0
750
750
100
19.5
23.2
36.1
80
3.0
800
800
100
20.8
24.5
38.2
80
3.2
800EB
800
133
20.8
24.5
38.2
80
3.2
850
850
100
22.5
25.7
40.0
80
3.4
866
866
133
22.9
26.1
40.7
80
3.4
900
900
100
23.2
26.7
41.6
77
3.5
933
933
133
24.5
27.5
42.8
77
3.6
1 GHz
1000
100
N/A
29.0
45.2
75
8
3.8
1B GHz
1000
133
26.1
29.0
45.2
70
9
75
8
3.8
1B GHz
7
1000
133
29.6
N/A
N/A
70
3.9
1.10 GHz
1100
100
N/A
33.0
51.4
77
4.4