參數(shù)資料
型號(hào)： BX80551PG3000FN
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 3000 MHz, MICROPROCESSOR, PBGA775
封裝： FLIP CHIP, LGA-775
文件頁數(shù)： 102/106頁
文件大?。?/td> 2713K
代理商： BX80551PG3000FN
Datasheet
95
Boxed Processor Specifications
7.3.2
Variable Speed Fan
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 then lower set point. These set points, represented in
Figure 7-9 and Table 7-2, can vary by a few degrees from fan heatsink to fan heatsink. The
internal chassis temperature should be kept below 39 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 7-1 for the specific
requirements.
Figure 7-9. Boxed Processor Fan Heatsink Set Points
Table 7-2. Fan Heatsink Power and Signal Specifications
Boxed Processor Fan
Heatsink Set Point (
C)
Boxed Processor Fan Speed
Notes
X
≤ 30
When the internal chassis temperature is below or equal to this set point,
the fan operates at its lowest speed. Recommended maximum internal
chassis temperature for nominal operating environment.
1
NOTES:
1.
Set point variance is approximately ± 1
°C from fan heatsink to fan heatsink.
Y = 35
When the internal chassis temperature is at this point, the fan operates
between its lowest and highest speeds. Recommended maximum
internal chassis temperature for worst-case operating environment.
-
Z
≥ 39
When the internal chassis temperature is above or equal to this set point,
the fan operates at its highest speed.
-
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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