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參數(shù)資料
| 型號： | BX80525U667256E |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 667 MHz, MICROPROCESSOR, XMA |
| 文件頁數(shù)： | 96/102頁 |
| 文件大?。?/td> | 878K |
| 代理商： | BX80525U667256E |
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Datasheet
93
Pentium III Processor for the SC242 at 450 MHz to 800 MHz
6.4
Fan Heatsink Thermal Specifications
This section describes the cooling requirements of the fan heatsink solution utilized by the boxed
processor.
6.4.1
Boxed Processor Cooling Requirements
The boxed processor will be directly cooled with a fan heatsink. However, meeting the processor's
temperature specification is also function of the thermal design of the entire system, and ultimately
the responsibility of the system integrator. Refer to Section 4.0 for processor temperature
specifications. The boxed processor fan heatsink is able to keep the processor temperature within
the specifications (see Table 25 and Table 26) in chassis that provide good thermal management.
For the boxed processor fan heatsink to operate properly, it is critical that the airflow provided to
the fan heatsink is unimpeded. Airspace is required around the fan to ensure that the airflow
through the fan heatsink is not blocked. Blocking the airflow to the fan heatsink reduces the
cooling efficiency and decreases fan life. Figure 52 illustrates an acceptable airspace clearance for
the fan heatsink. It is also recommended that the air temperature entering the fan be kept below
45 °C (see Figure 52 for measurement location). Again, meeting the processor's temperature
specification is the responsibility of the system integrator. Refer to Section 4.0 for processor
temperature specifications.
Figure 54. Recommended Baseboard Power Header Placement Relative to Fan Power
Connector and Intel Pentium III Processor
Table 40. Baseboard Fan Power Connector Location
Fig. Ref.
Labels
Dimensions (Inches)
Min
Typ
Max
V
Approximate perpendicular distance of the fan power connector
from the center of the 242-contact slot connector
1.44
W
Approximate parallel distance of the fan power connector from
the edge of the 242-contact slot connector
1.45
X
Lateral distance of the baseboard fan power header location
from the fan power connector
4.75
242-Contact Slot Connector
W
V
Fan power connector location
(1.56 inches above motherboard
Motherboard fan power header should be
positioned within 4.75 inches of the fan
power connector (lateral distance).
X
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