Intel B980 FF8062700997802 数据表
产品代码
FF8062700997802
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,
and
, can vary by a few degrees from fan heatsink
to fan heatsink. The internal chassis temperature should be kept below 38 ºC.
) 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
for the specific requirements.
Figure 31.
Boxed Processor Fan Heatsink Set Points
Lower Set Point
Lowest Noise Level
Internal Chassis Temperature (Degrees C)
X
Y
Z
Increasing Fan
Speed & Noise
Speed & Noise
Higher Set Point
Highest Noise Level