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 |
| Reporter | bryanwieg | Assigned To | alfredo | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | acknowledged | Resolution | open | ||
| Platform | Biostar a785g3 | OS | Windows 7 | ||
| Product Version | 4.43 | ||||
| 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 | |||||
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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. |
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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. |
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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? |
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Was this ever resolved? I have a TA770XE mobo and can see the system fans running, but do not get speed options for them. |
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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. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 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 | |
| 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 | |
| 2012-01-18 09:04 | dpallen77 | Note Added: 0006799 | |
| 2012-01-20 21:41 | norman02us | Note Added: 0006803 |
