Intel E1400 - Celeron 2.0GHz 800MHz 512KB Socket 775 Dual-Core CPU User Manual

Legacy Fan Speed Control
114 Thermal and Mechanical Design Guidelines
Figure 7-42. Temperature Range = 10 °C
0
500
1000
1500
2000
2500
3000
3500
Time (s)
40
45
50
55
60
65
70
75
80
Fan RPM Tdiode Tcontrol Tlow
It should be noted that having T
SENSOR
above T
CONTROL
is expected for workloads near
TDP power levels and high system ambient. See Section E.4 for additional discussion
on T
CONTROL
versus Thermal Profile
For use with the ATX Boxed Processor enabled reference solution a T
RANGE
value of
10 °C is recommended. For BTX Boxed Processor enabled reference solutions, T
RANGE
value of 7 °C is recommended.
E.2.1.2 Minimum PWM Duty Cycle
The final step in determining the FSC setting is to determine the minimum PWM Duty
cycle. This is the fan speed for any T
SENSOR
< T
LOW
. The selection of this value is
dependent on
Acoustic target at system idle
Voltage regulator cooling
For a motherboard design intending to use the Boxed Processor or the enabled
reference thermal solution the recommended minimum PWM duty cycle is 20%.
Note: Set minimum PWM Duty Cycle only as low as required to meet acoustic requirements.
The FSC design needs to accommodate transition from a low power state to TDP
workloads without having PROCHOT# becoming active.

Intel E1400 - Celeron 2.0GHz 800MHz 512KB Socket 775 Dual-Core CPU Specifications

General

Brand	Intel
Model	E1400 - Celeron 2.0GHz 800MHz 512KB Socket 775 Dual-Core CPU
Category	Computer Hardware
Language	English