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Thread: GA-EP45-UD3P PWM Fan Control




  1. #11
    Ken429 is offline Senior Member
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    Default Re: GA-EP45-UD3P PWM Fan Control

    I gave Speedfan another one hour shot and still came up frustrated. I'm beginning to think it don't work for the GA-EP45-UD3P MB! Maybe someone out there will come to our aid and show the Speedfan 4.46 light. All I get is Pwm1, Pwm2 and Pwm3 and no matter what I do with the settings I cannot get it to change the cpu fan speed or any fan speed for that matter! I'm sure I'm missing the obvious because it detects accurately almost every thing that is going on with the system.

  2. #12
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    Default Re: GA-EP45-UD3P PWM Fan Control

    Click Configure, goto Advanced tab and choose your Super-I/O chip from pulldown list, it's IT.... something, it's been a long time since I used a GB P45 board so I don't remember exact names. Options for I/O chip should open and you will see control modes for PWM 1,2 and 3 channels, set them all to Software controlled mode and click OK. You should now be able to adjust Cpu and Sys_Fan2 headers from main page.
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  3. #13
    Ken429 is offline Senior Member
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    Default Re: GA-EP45-UD3P PWM Fan Control

    mm67,
    Thank you, that got me in the ball game. I went Configure>Advanced>IT8718F at $290 on ISA and changed PW1,2,3 to software. That did the trick, but now after setting up Fan Control and playing with the graph the fan(s) don't seem to follow my instructions. The cpu fan starts out ok ~800 rpm and then jumps to beyond full out even though I have it set up to gradually increase the speed as the cpu temperature increases. Is there another trick I'm missing?

  4. #14
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    Default Re: GA-EP45-UD3P PWM Fan Control

    IDK just a swag but try to
    Last edited by Conners; 08-11-2012 at 06:42 AM.

  5. #15
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    Default Re: GA-EP45-UD3P PWM Fan Control

    Quote Originally Posted by Ken429 View Post
    mm67,
    Thank you, that got me in the ball game. I went Configure>Advanced>IT8718F at $290 on ISA and changed PW1,2,3 to software. That did the trick, but now after setting up Fan Control and playing with the graph the fan(s) don't seem to follow my instructions. The cpu fan starts out ok ~800 rpm and then jumps to beyond full out even though I have it set up to gradually increase the speed as the cpu temperature increases. Is there another trick I'm missing?
    How have you set the warning temperatures on Temperatures tab, if recall correctly a temperature that exceeds warning limit will force the linked fan to run at full speed.
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  6. #16
    Ken429 is offline Senior Member
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    Default Re: GA-EP45-UD3P PWM Fan Control

    I'm making some progress but still have erratic Speedfan behavior. I turned off fan control in the BIOS hoping that would solve the problem but it only made the fans run at 100% until Speedfan took over. As you can see from the attachments for some reason the fans crank up to almost 100% as soon as Core0's temperature increases. 74% of 1500 = 1110. So something else is going on. Any suggestions short of buy a manual controller would be appreciated.

    I tried to attach additional screen shots showing that I changed the Desired and Warning temps to 35C and 70C but I guess one screen shot is all I get per post?
    Attached Images Attached Images GA-EP45-UD3P PWM Fan Control-speedfan_under_load-jpg 
    Last edited by Ken429; 08-11-2012 at 08:03 PM.

  7. #17
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: GA-EP45-UD3P PWM Fan Control

    You can only attach one image per post when the picture is from your computer.

    There's no limit if you use the Insert Image option where you include the link to a valid picture file format, such as JPG, PNG, etc.
    When creating your post, the code generated for each picture will be similar to:
    prefix //www.MyPhotoURL.com/FolderName/MyPic01.jpg suffix
    prefix //www.MyPhotoURL.com/FolderName/MyPic02.jpg suffix
    prefix //www.MyPhotoURL.com/FolderName/MyPic03.jpg suffix

    where prefix = [ I M G ] [ U R L ] h t t p :
    and suffix = [ U R L ] [ / I M G ]
    without any extra spaces.
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  8. #18
    Ken429 is offline Senior Member
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    Default Re: GA-EP45-UD3P PWM Fan Control

    profJim,
    It has been awhile since I got into the multiple picture posting mode on TweakTown but I knew it could be done. I just needed a refresher course. Thanks for update. Now get busy and solve my Speedfan problem(s)!

  9. #19
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    Default Re: GA-EP45-UD3P PWM Fan Control

    You are sure that Pwm1 controller is the one that is linked to Cpu fan header ? I/O chip has 3 fan control channels but Gigabyte P45 boards only use two them for cpu and sysfan2 headers and the order of channels seems to be different on all boards. On my old P45 board I think it was actually Pwm3 that controlled cpu fan header, Pwm2 was connected to Sysfan2 header and Pwm1 was not connected.
    Gigabyte GA-Z68XP-UD4
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    Kingston HyperX Genesis PC3-12800 2* 4 GB
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    Gigabyte GA-Z77X-UDH5
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  10. #20
    Ken429 is offline Senior Member
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    Default Re: GA-EP45-UD3P PWM Fan Control

    Pwm1,2 and 3 are set to "Software Controlled". Here is what I get:

    Pwm1 @ 100%
    Pwm2 @ 100%
    Pwm3 @ 100%
    Fan speed ~1020 rpm

    Pwm1 @ 0%
    Pwm2 @ 100%
    Pwm3 @ 100%
    Fan speed 0 rpm

    Pwm1 @ 100%
    Pwm2 @ 0%
    Pwm3 @ 100%
    Fan speed ~1020 rpm

    Pwm1 @ 100%
    Pwm2 @ 100%
    Pwm3 @ 0%
    Fan speed ~680 rpm

    The max fan speed has changed since I reinstalled the Noctua Low Noise Adapters since I took the screen shot above. I also enabled CPU Smartfan in the BIOS since could not stand the noise during a reboot and it seemed to have no effect on Smartfan.

    Based on the above I'm totally confused!
    Last edited by Ken429; 08-12-2012 at 01:12 AM. Reason: Added Pwm2 case.

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