参数资料
型号: BX80557E2140
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: MICROPROCESSOR, PBGA775
封装: LGA-775
文件页数: 3/107页
文件大小: 1474K
代理商: BX80557E2140
Boxed Processor Specifications
100
Datasheet
7.3.2
Fan Speed Control Operation (Intel Pentium Dual-Core
Desktop Processor E2000 Series)
If the boxed processor fan heatsink 4-pin connector is connected to a 3-pin
motherboard header it will operate as follows:
The boxed processor fan will operate at different speeds over a short range of
internal chassis temperatures. This allows the processor fan to operate at a lower
speed and noise level, while internal chassis temperatures are low. If internal
chassis temperature increases beyond a lower set point, the fan speed will rise
linearly with the internal temperature until the higher set point is reached. At that
point, the fan speed is at its maximum. As fan speed increases, so does fan noise
levels. Systems should be designed to provide adequate air around the boxed
processor fan heatsink that remains cooler than a lower set point. These set points,
represented in Figure 31 and Table 35, can vary by a few degrees from fan heatsink
to fan heatsink. The internal chassis temperature should be kept below 38 C.
Meeting the processor's temperature specification (see Chapter 5) is the
responsibility of the system integrator.
The motherboard must supply a constant +12 V to the processor's power header to
ensure proper operation of the variable speed fan for the boxed processor. Refer to
Table 35 for the specific requirements.
Figure 31.
Boxed Processor Fan Heatsink Set Points
Lower Set Point
Lowest Noise Level
Internal Chassis Temperature (Degrees C)
X
YZ
Increasing Fan
Speed & Noise
Higher Set Point
Highest Noise Level
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