View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0001784||SpeedFan||Fan control||public||2011-04-11 02:43||2018-12-25 10:17|
|Platform||Biostar a785g3||OS||Windows 7||OS Version|
|Target Version||Fixed in Version|
|Summary||0001784: No case fan speed control|
|Description||Speedfan Ver 4.44 Beta.|
Sent Debug via Speedfan.
There is one 4 pin fan (for CPU) and one 3-pin sys fan. Speedfan controls the CPU fan fine. Speedfan is unable to control the sys fan.
I notice under the speed tab all speeds are listed as PWM, despite the fact that the Sys fan is a 3-pin fan which I understand to be voltage regulated.
For the IT8718F:
Fan 1 = CPU Fan
Fan 2 = Sys Fan
Fan 3-5 = Always 0, unknown.
Temp 1-3 = I believe are individual core temps.
Core = CPU temp (which is disabled when ACC is on)
Speed04 = CPU Fan
For the SB7xx/8xx PM2:
Fan 1: Avg 12 RPM, very wierd, I don't know what fan this is
Fan 2: Avg 2k rpm, I don't know what fan this is
Fan 3: always 0, unknown
|Tags||No tags attached.|
|Motherboard Model||Biostar A785G3|
|Video Card Model|
Changing the fan speed for the sys_fan is probably not possible on this motherboard. The motherboard's manual shows that the BIOS doesn't offer sys_fan control. The lack of BIOS control is a strong indicator that the necessary hardware parts for controlling the fan are missing on the motherboard.
I agree with norman02us.
Consider that a 3-pin fan can be controlled both using PWM and voltage. PWM is a way to simulate voltage changes.
Are you saying that a PWM 3-pin fan may be successfully controllable?
.. Or are you saying the by default 3-pin fans are controllable by PWM and voltage changes?
||Was this ever resolved? I have a TA770XE mobo and can see the system fans running, but do not get speed options for them.|
As stated above, there is nothing to solve here.
Take a look at the motherboards manual (or BIOS). If the BIOS doesn't show the speed or the control option for a fan, then the necessary hardware on the motherboard is probably missing.
If the hardware is not there, Speedfan can't do anything.
|2011-04-11 02:43||bryanwieg||New Issue|
|2011-04-11 02:43||bryanwieg||Status||new => assigned|
|2011-04-11 02:43||bryanwieg||Assigned To||=> alfredo|
|2011-04-11 09:24||norman02us||Note Added: 0006102|
|2011-04-11 09:24||norman02us||Note Edited: 0006102||View Revisions|
|2011-04-11 09:55||alfredo||Note Added: 0006104|
|2011-04-11 09:55||alfredo||Status||assigned => acknowledged|
|2011-04-11 15:45||bryanwieg||Note Added: 0006108|
|2011-04-11 16:29||bryanwieg||Note Edited: 0006108||View Revisions|
|2012-01-18 09:04||dpallen77||Note Added: 0006799|
|2012-01-20 21:41||norman02us||Note Added: 0006803|