Viewing page 6 of 9 pages.
Previous 1 2 3 4 5 6 7 8 9 Next
Fan Control
When it comes to customizable control, SpeedFan is our application of choice.
If properly supported, it can be configured to raise/lower multiple fan speeds
to designated limits when any specified temperature threshold is breached.
|
SpeedFan main screen, edited with correlations.
|
SpeedFan duplicates most of the functionality of Asus' PC Probe application,
except for the +5V reading. To enable fan control, set PWM modes 2 &
4 in the Advanced menu to "Manual PWM Control." Speed02 and Speed04
provide full control for the CPU and CHA fan headers respectively.
Q-Fan
We tested the board's Q-Fan feature by connecting fans to the CPU and CHA fan
headers, but connecting the CPU cooler's fan to a variable DC fan controller,
so we could lower it as necessary. We then proceeded to stress the processor
using Prime95 and monitored the fan speeds using SpeedFan. The fans used were
a Scythe Kama 92mm PWM fan (maximum 2560 RPM) and a Scythe Kama Flow 80mm (maximum
1550 RPM).
|
Q-Fan Behavior
|
|
Critera
|
Silent
|
Optimal
|
Performance
|
|
CPU Fan
|
|
Trigger Temp.
|
67°C
|
62°C
|
54°C
|
|
Temp. Range
|
9°C
|
8°C
|
8°C
|
|
Fan Speed
Range
|
620 RPM to 2560 RPM
|
660 RPM to 2560 RPM
|
660 RPM to 2560 RPM
|
|
CHA Fan
|
|
Trigger Temp.
|
67°C
|
63°C
|
None
|
|
Temp. Range
|
1°C
|
1°C
|
N/A
|
|
Fan Speed
Range
|
1060 RPM to 1220 RPM
|
1200 RPM to 1340 RPM
|
1320 RPM
|
We found that once the trigger temperature is reached the CPU fan speed increases
over a span of 8-9°C from between 600 and 2600 RPM no matter which setting
was used. The only difference seemed to be the trigger temperature with "Performance"
starting at 54°C, "Optimal" at 62°C and "Silent"
at 67°C. The CHA fan speeds on the other hand varied very little. It should
be noted that we actually had to turn the CPU cooling fan off before the CPU
temperature got high enough to make the fans ramp up. Either our CPU was running
especially cool, or the fan control just wasn't aggressive enough. We did not
experience any instability due to overheating.
| Help support this site, buy the Asus P5N7A-VM: Geforce 9300 IGP from one of our affiliate retailers! |
|
