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No fan adjustments for one GPU + different GPU-clock speeds in Overdrive.

Last response: in Graphics & Displays
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October 6, 2013 2:22:45 AM

Hi everyone,

I've got two HD4870's (512 Mb) in Crossfire, but I can only control the fan speed on one of them. I added the second GPU later (which is the one I CAN control the fan speed on), but I've never had the option to control the fan speed on my original GPU, even before I installed the second GPU.

Here are some screenshots:

First (original) GPU:


Second GPU:


As you can also see, they run at different GPU-speeds, which probably explains the difference in temperature.

Is there anyway I can fix this so I can control the fanspeed on my first GPU and possibly have them run at the same speed?

P.S. The language in the pictures is in Dutch, but in the second picture the bottom option is the one that gives you control over your fan, which is the option I lack in the first picture.

P.P.S. Both GPU's have a different brand, one is a Powercolor and the other is a XFX, the only difference between them is that the Powercolor has a core clock of 770 Mhz and the XFX has a core clock of 750 Mhz.


October 6, 2013 2:48:08 AM

Try re-installing catalyst. Make sure you uninstall it completely first(uninstall all AMD/ATI programs in windows)

Otherwise, this could be a problem with firmware. You can check to see if there is an update as sometimes there is one. I had two 4650 XFX cards and they had a update but it made the card act weird so I reverted.

Edit: Indeed there are BIOS problems with the PowerColor: http://www.techpowerup.com/69493/bios-issues-continue-t...

Here is the page for an update.
http://www.techpowerup.com/vgabios/index.php?manufactur...
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October 6, 2013 7:34:29 AM

memadmax said:
Try re-installing catalyst. Make sure you uninstall it completely first(uninstall all AMD/ATI programs in windows)

Otherwise, this could be a problem with firmware. You can check to see if there is an update as sometimes there is one. I had two 4650 XFX cards and they had a update but it made the card act weird so I reverted.

Edit: Indeed there are BIOS problems with the PowerColor: http://www.techpowerup.com/69493/bios-issues-continue-t...

Here is the page for an update.
http://www.techpowerup.com/vgabios/index.php?manufactur...


I already reinstalled the drivers when I added the second GPU so I don't think that will fix the problem.
I did download the bios (for both GPU's), but could you tell me how to use them, all I have is two rom-files.

Edit: I already have the latest BIOS-version installed. So no solution there.

2nd edit: It appears that my Powercolor GPU doesn't support fan-control, the only way to set the fan-speed is to flash the bios using RBE.

On a side note, I would still like to know why they run at different speeds.

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October 6, 2013 2:13:42 PM

The different speeds are dictated by the manufacturer based on the card. The firmware/bios comes into play here as well =D
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October 7, 2013 10:37:22 AM

memadmax said:
The different speeds are dictated by the manufacturer based on the card. The firmware/bios comes into play here as well =D


Ok, thanks. So there's nothing I can do about that then.

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