Tom's Hardware > Forum > Graphic & Displays > ATI > [Solved] Gigabyte Saphhire HD 4850 Fan speed sensor is broken

[Solved] Gigabyte Saphhire HD 4850 Fan speed sensor is broken

Forum Graphic & Displays : ATI - [Solved] Gigabyte Saphhire HD 4850 Fan speed sensor is broken

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Best answer from coozie7.

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meberem   06-11-2009 at 07:09:21 PM

Hi all,
I have an HD Radeon 4850 installed in my case, love it but the fan seems to be stuck @ 100% all the time i know this cos its so damn loud. I have checked in RivaTuner, Catalyist Control Center and GPU-z, they all tell me the fan usage is 0% (GPU-Z tells me its running @1RPM though). I have no idea what this could be i have tried all avalible drivers and nothing still runs @ 100% all the time.

Thanks in advance,
P.S. I have checked the BIOS for it and its the default one so fan should kick in at 69oC

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Best answer from coozie7
Exactly which card is it? Make and exact model.
Perhaps you can simply replace the fan with something quieter?
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coozie7   06-11-2009 at 07:23:29 PM

It could be a driver issue, but I doubt it. Try installing the latest drivers from ATI first.
Otherwise, if it's under warranty I would suggest getting it replaced before you go deaf.
Otherwise I would get a replacement cooler.

------------------------------ Peace cannot be kept by force, it can only be achieved by understanding: Eienstien
 Reply to coozie7
meberem   06-11-2009 at 07:54:40 PM

Yeah i have tried all of them all with the same sucess. I really hoping it wasn't that as I got this card from a friend of mine, from new, as a replacement for mine and as thankyou for building her her PC as this one didn't fit in the case. So it would be a little hard to sort that out :s

Thankyou for your suggestion though

Reply to meberem
coozie7   06-11-2009 at 09:12:59 PM
Best answer

Exactly which card is it? Make and exact model.
Perhaps you can simply replace the fan with something quieter?

------------------------------ Peace cannot be kept by force, it can only be achieved by understanding: Eienstien
 Reply to coozie7
meberem   06-11-2009 at 09:37:46 PM

sorry don't know where sapphire came from, somewhere i am sure, GV-R485ZL-512H F1 is the number according to GPU-Z. I have had a peek inside the bois and the fan is suppose to start up @ 69oC and rise @ a rate of 44% apparently. I know it probably wasn't a good idea but i held the fan down until it stopped and let the heat build up and sure enough in RivaTuner and Ati CCC read the fan % increasing supposedly

Reply to meberem
meberem   06-17-2009 at 11:23:20 AM

Apparently this card model cannot be controlled by the VGA BIOS, so i have replaced it with an Accellero S1 rev2 and now it is wonderfully quite and even cooler than before ^^. Thanks for the suggestions and help though

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