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FAN CONTROL
The Smart Fan feature supports both 4-pin and 3-pin fans, so we connected one
of each to the two available fan headers — the X2 4850e heatsink stock fan
(650 to 3200RPM) and a Scythe
Kaze-Jyu 100mm case fan (SY1025SL12H, 700 to 2100RPM). We then stressed
the system with CPUBurn
K7 and monitored the relationship between Core temperature and fan speed
via SpeedFan.
|
Core Temp.
|
Fan Speed (RPM)
|
|
CPU_FAN
|
SYS_FAN
|
|
25°C
|
850
|
1400
|
|
30°C
|
1100
|
|
35°C
|
1350
|
|
40°C
|
1700
|
|
45°C
|
1950
|
|
50°C
|
2250
|
The Scythe fan connected to the SYS_FAN header remained at a steady 1400RPM
through out. The fan connected to the CPU_FAN header on the otherhand had an
almost linear relation to the Core temperature, following it very closely, increasing
gradually in a nice, steady, gentle curve. We found its behavior to be pleasant
— there were no sudden, jarring ramp ups in speed. We assume that beyond
50°C, the fan speed continues to increase in the same manner until it hits
whatever the maximum threshold temperature is.
|
EasyTune's Smart Fan configuration screen.
|
For those looking to fine tune Smart Fan's behavior, Gigabyte's EasyTune utility
offers some additional control, in that you can set minimum and maximum CPU
fan speeds as well as threshold temperatures. The downside is that the EasyTune
GUI is horrific looking. While we believe the intention was to make it look
like the controls of a commercial airliner we can't help but notice its resemblance
to an uterus.
|
Fan header correlations in SpeedFan.
|
If you choose to bypass Gigabyte's Smart Fan control, SpeedFan would be an
excellent choice as it provides full customizable control over both fan headers.
Change PWM mode 1 and 2 to "Software Controlled" in the Advanced menu
and you're ready to go.
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