Intel 4 620 JM80547PG0722MM Ficha De Dados
Códigos do produto
JM80547PG0722MM
96
Datasheet
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:
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 the 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 the lower set point. These set points,
represented in
temperatures. This allows the processor fan to operate at a lower speed and noise level, while
internal chassis temperatures are low. If the 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 the lower set point. These set points,
represented in
, can vary by a few degrees from fan heatsink to fan
heatsink. The internal chassis temperature should be kept below 38 ºC. Meeting the processor's
temperature specification (see
temperature specification (see
) 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
operation of the variable speed fan for the boxed processor. Refer to
for the specific
requirements.
Figure 7-8. Boxed Processor Fan Heatsink Airspace Keepout Requirements (Side View)
Figure 7-9. 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