Million Dollar Fan Speed Question !!!!

B.Gen.Jack.O.Ne

Junior Member
Dec 27, 2010
7
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0
APOLOGY FIRST: Hi, first, I know I asked here question about Gigabyte HD 6850 fan speed and temps, but since than I done too many things and found too many interesting stuff I had to create new thread. Please delete my old one.

OK, lets roll
So, again, hi there. I will cut the crap and lets fo technical...
I bought Gigabyte HD 6850 OC card. Fan speed seemed unadequate for me so I looked into CCC overdrive for its actuall speed. It was about 45%. Too much considering its cooler can hold it down to about 36 celsius in 35% fan speed. Just the speed I need to keep it quiet.
I started several attempts to change this.

Attempt 1: CCC Overdrive fan setting:
Nothing can be actually done here since it doesent dupport fan curve.

Attempt 2: Download BIOS and search it for its fan curve:
I downloaded BIOS using GPU-Z and read using RBE - found its fan curve starts at 52%. What? 52% and CCC shows 45%? What the hell? - should I thought... But I hadn´t....

Attempt 3: Edit BIOS, Flash BIOS:
I edited fan curve to my desired speed. After several programs that didnt work I managed to flash it using latest WinFlash. I started PC - sound quiter - I was excited, windows loaded, opened CCC overdrive and see what? 45% AGAIN?

Attempt 4: What if any other programs messing it up?:
I uninstalled EasyTune 6 and practically everything with ability to mess with fan speed. Of course with no effect....

Attempt 5: Listen where is the freakin problem:
I listened and found once the Windows 7 reaches some bootstage, possibly video drivers load, it goes up from BIOS curve to something....

Totally desperate move 1:
I made google hell with searching about everything on this problem, with every discussion I found ended unsolved. With suggestion like some hidden registry settings and so on....

WHAT DOES NOT MAKE SENSE TO ME:
Other people reported their HD 6850 from different vendors run at lower speeds like 32% and so - but I have fresh installed Windows 7, with latest Catalyst drivers, so where the hell is problem?

So I decided to ask this question almost everywhere, in hope we can together found what is cousing this. From my google searches I am not alone. Please help. Thanks.
 

daRkKon

Member
Dec 12, 2005
135
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first off, stop stressing about this problem all you need to do is download ati 10.10 drivers and right click desktop ATI catalyst control center, click on graphics tab at upper left hand corner, select ati overdrive, click enable manual fan control (mine didnt do this first time might need to see if it did it when u try) and adjust fan speed. click APPLY, then ok.

EDIT: im not replying to another thread u make about the same problem either so stick with this one. http://forums.anandtech.com/showthread.php?t=2130699

! manufacturers adjust the fan speed for what is best for their cards !
 
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B.Gen.Jack.O.Ne

Junior Member
Dec 27, 2010
7
0
0
OMG, I really want to be cool and happy, but that is not obviously possible, when you don´t read my posts....

I clearly written that I don´t want to use ATi Override becouse you cannot set fan curve there, which is feature I really want.

Than, I wrote, I found this problem was discussed many times over internet, with many cards, so thats why new thread. Maybe someone is solving fan speed, so he doesen´t care about HD 6850. Therefire new thread.

And the last, Gigabyte obviously NOT. If you knew something deeper, you would understand. For example this card has one of the best coolers in this segment. Or that other manufacturers with worse coolers have fan curve starting even on 20%. Or you could know that first BIOS for 6850 non-OC had fan curve set at about 22 %. Than they release new to adress the problem that CCC locked its speed at 72% everytime - therefore massive wind sound. Their second BIOS was set to 50% fan, I don´t know how this solved that problem but somehow it did.

So obviously even Gigabyte doesent think this card needs fan so loud, when first BIOS was set much lower. And it really doesent. On 35% My card runs at 36°C idle, thats VERY nice I think.
 

cusideabelincoln

Diamond Member
Aug 3, 2008
3,275
46
91
Does the fan speed even change at all? You can use MSI Afterburner to monitor changes.

The fan speed most likely isn't adjustable on the card you have. Some aftermarket coolers do not use an adjustable fan; they use a fixed speed.