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| 型號(hào)： | 21085 |
| 英文描述： | AMD-K6 Processor I/O Model Application Note AMD-K6 Processor Thermal Solution Design Application Note |
| 中文描述： | 的AMD - K6處理器的I / O模型的應(yīng)用指南的AMD - K6處理器散熱解決方案設(shè)計(jì)中的應(yīng)用說(shuō)明 |
| 文件頁(yè)數(shù)： | 18/22頁(yè) |
| 文件大?。?/td> | 335K |
| 代理商： | 21085 |
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10
Layout and Airflow Considerations
AMD-K6
Processor Thermal Solution Design
21085I/0—February 1999
For the given chassis, different combinations of fans were
tested. The tests were performed in an oven with a constant
temperature of 35°C, and the internal ambient temperature of
the chassis was measured with a thermocouple. The
thermocouple was located two inches from the processor as
shown in Figure 8 on page 11. A control case was run with no
added fans in the chassis and it resulted in an internal ambient
of 48.2°C. The best improvement in ambient temperature was
observed with the configuration of a single box fan added to the
chassis as an intake fan in the rear wall of the system chassis.
This fan placement resulted in a decrease in ambient
temperature from 48.2°C to 43.6°C. See Table 2 for a complete
summary of fan and chassis combinations. Also, note that the
best case temperature (T
CASE
) for the processor was obtained
when the internal ambient temperature was held to
approximately 44.4°C. As shown in the test, the lowest ambient
temperature is not always an indicator of the lowest T
CASE
.
Ambient temperature is very dependent on the airflow path
and how it is measured. The only way to completely verify a
thermal solution is to measure T
CASE
.
Table 2.
Summary of Chassis Box Fan Configurations
Thermal Test Condition
Test #1
Test #2
Test #3
Test #4
Rear Wall System Fan
Off
Off
Exhaust
Intake
Front Wall System Fan
Off
Intake
Intake
Off
Processor, T
CASE
68.8°C
69°C
64.1°C
65.9°C
Internal Ambient Temperature
48.2°C
48.7°C
44.4°C
43.6°C
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