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  • P35-DS4 fan problems

    I have the before mentioned motherboard with F9 bios. I have a P182 case. I just installed three new fans. One in my Tuniq Tower, one in the back as exhaust, and one in the top of the case as exhaust. All three fans are connected to their own fan control. These are Silverstone FM123 fans. They run at 800 - 2600 RPM. At full click they are quite noisy. The top fan and the CPU fan when put at max are pushing around the listed max and you can really hear them. The back case fan when I turn it to full it's barely audible. Bios keeps jumping between 0 and 1318 RPM's. It will not spin as fast as the other two. The CPU one is hooked into the CPU power jumper, the Top case one is hooked into the AUX Fan 1 connector, and the one in question is hooked into the AUX Fan 2 connector at the far side of the motherboard. Was thinking of plugging it into the Northbridge connector but wasn't sure if that was a good idea. Any idea why it's acting this way? That's the one I really want pushing air. I have the bios set to not manage any of the fans. All fan controls are disabled in the Bios.

    JR

  • #2
    Re: P35-DS4 fan problems

    By the way, I moved the fan connector to the Northbridge fan connector and it started running as expected. Does this mean something is wrong with the Aux Fan 2 connector, or is it somehow controlling th fan speed even though I have it disabled?

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    • #3
      Re: P35-DS4 fan problems

      Love talking to myself here, however just an update. I have confirmed on another forum that three other people tried the secondary aux fan connector and had the same problem. Any comments Gigabyte?

      Also as a side note, can you use the Power Supply fan connector for a standard case fan with the assumption that that one is working correctly?

      JR

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      • #4
        Re: P35-DS4 fan problems

        why not get a molex to 3/4 pin adapter and run the fan from that?
        i personally prefer to run fans that way unless they are being speed controlled by the mobo... less current being pulled from the board that way
        good luck

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        • #5
          Re: P35-DS4 fan problems

          Originally posted by f-town View Post
          why not get a molex to 3/4 pin adapter and run the fan from that?
          I have plenty of open connections on my power supply and have both connectors on the fan. When you are at a 50% overclcok on your system, you like to know what your fans are set to. I have a manual knob on the back of the computer to adjust the speed and the only way I know the speed is in speedfan. If I can't read the RPM's off the motherboard sensors then do not know what I have it set at to obtain different cooling levels.

          JR

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          • #6
            Re: P35-DS4 fan problems

            set your fan speed by ET5?

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            • #7
              Re: P35-DS4 fan problems

              Originally posted by GIGABYTE - Janus Yeh View Post
              set your fan speed by ET5?
              I have fan speed knobs. I overclock and do not want the system trying to figure out the right fan speed for my various overclocks. Don't beat around the issue. Something is wrong with that second auxilary fan connector. It is providing limited power to that connector which is causing the fan so spin slower than it should. None of the other connections do that.

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              • #8
                Re: P35-DS4 fan problems

                If you think it is a hardware issue
                you can RMA it

                Thank You

                Comment


                • #9
                  Re: P35-DS4 fan problems

                  Originally posted by GIGABYTE - Janus Yeh View Post
                  If you think it is a hardware issue
                  you can RMA it

                  Thank You
                  Counting my recent thread, " GA-P35-DS4 Rev 2 has poor fan control", this makes two reports of SYS FAN 2 not supplying adequate power. I think it's unlikely this problem will be solved by RMA. It seems more likely that a BIOS fix is in order. At least the F9 BIOS fixed the failure of the CPU fan to spin up, and like the SYS FAN 2 header, the CPU fan header is 4-pin PWM. I'm well aware there is no BIOS setting to control SYS FAN 2, but that doesn't mean the BIOS isn't the common problem here.

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                  • #10
                    Re: P35-DS4 fan problems

                    Originally posted by tima092384 View Post
                    Counting my recent thread, " GA-P35-DS4 Rev 2 has poor fan control", this makes two reports of SYS FAN 2 not supplying adequate power. I think it's unlikely this problem will be solved by RMA. It seems more likely that a BIOS fix is in order. At least the F9 BIOS fixed the failure of the CPU fan to spin up, and like the SYS FAN 2 header, the CPU fan header is 4-pin PWM. I'm well aware there is no BIOS setting to control SYS FAN 2, but that doesn't mean the BIOS isn't the common problem here.
                    I agree with you whole heartedly. Not sure why the support here is less than adequate, however in Gigabyte's defense, most all motherboard manufacturer's support is less than acceptable. Must be something to do with the quantity of boards sold and the number of things that can go wrong with them. When you have numerous people with this problem, RMA's aren't going to help. I'm going to try and use the power supply fan connector and see how that works since my power supply doesn't physically use it as it has it's own internal fan speed sensor.

                    JR

                    Comment


                    • #11
                      Re: P35-DS4 fan problems

                      Originally posted by jriker1 View Post
                      I agree with you whole heartedly. Not sure why the support here is less than adequate, however in Gigabyte's defense, most all motherboard manufacturer's support is less than acceptable. Must be something to do with the quantity of boards sold and the number of things that can go wrong with them. When you have numerous people with this problem, RMA's aren't going to help. I'm going to try and use the power supply fan connector and see how that works since my power supply doesn't physically use it as it has it's own internal fan speed sensor.

                      JR
                      I ended up abandoning SYS FAN 2 and running my four Nexus 120mm fans off the two three-pin fan headers with the help of Y-cables. I use two FanMate 2's to control speed. It works nicely, but I did have to reroute my cables.

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                      • #12
                        Re: P35-DS4 fan problems

                        Yeah, same here. Good thing my arctic cooling pwm case fan comes with this PWM sharing thing... so both are connected to CPU_FAN and are controlled by smartfan.

                        Originally posted by tima092384 View Post
                        I ended up abandoning SYS FAN 2 and running my four Nexus 120mm fans off the two three-pin fan headers with the help of Y-cables. I use two FanMate 2's to control speed. It works nicely, but I did have to reroute my cables.

                        Comment


                        • #13
                          Re: P35-DS4 fan problems

                          Since many issues seem to be finally fixed with F11 Bios, i think it's time to bump up the issue with Sys Fan 2 again.
                          Fans plugged to this connector don't get enough power, i recently tested with a regular 3-pin 8cm fan under F11:

                          Sys 2 : 1900 rpm
                          Sys 1 : 2700 rpm
                          (i tried a pwm fan too, that one didn't even start to spin)

                          So i thought it might be controlled by the Bios, but that's not the case, same speed under load and idle.
                          Since it's also 4-pin PWM, i'm thinking this connector is actually supposed to be controlled by the Bios but has been omitted in the bios-programming.
                          (i don't get why so many companies slack on the bios/firmware programming, it's sometimes a difference of only 2 minutes worktime, what's that compared to developing a whole motherboard?)

                          I know i can just abandon it and connect directly to Power Supply or NorthBridge connector, i do however like to monitor the speeds.

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                          • #14
                            Re: P35-DS4 fan problems

                            I also have annoying problems with PWM fans. CPU fan
                            speed can be adjusted using EasyTune, but since bios F8
                            is seems that I cant go below some threshold value
                            and fan always spins at approx. 40% duty or above , regardles of SmartFan settings. Behavior of SYS_FAN2 connector
                            is beyond user control, and therefore useless. A have also noticed, as others, that fan connected to SYS_FAN2 never reach full speed.

                            Actually, I expected full control over all fans. In reality
                            we got only poor control (linear) of the CPU fan speed.

                            Comment


                            • #15
                              Re: P35-DS4 fan problems

                              I think maybe I am seeing the same problem as Va00. I upgraded yesterday to F11, and now my CPU fan speed has increased considerably. Previously, with F6 or F7, the idle speed was around 400 rpm, and the load speed around 900. Now, with Smart Fan Control Method set to Auto, the speed is constantly around 1150 rpm, which is nearly the maximum for my S-Flex 1200. Has any one any experience of setting to Legacy? I like the cool temperatures you get at these speeds, but I prefer the quiet I had before. Oh yes, and as I use linux instead of Windows, EasyTune is not an option.

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