Sign in with
Sign up | Sign in
Your question

7850 Fan RPM is rapidly fluctuating in games

Tags:
  • Graphics
Last response: in Graphics & Displays
Share
April 7, 2013 8:30:04 AM

Hi, I've just made a brand new build and everything seemed to be going smoothly until I fired up a game. My GPUs fan starts to rev up and down very fast. While outside of a game the fan runs consistently and quietly. I did figure the possibility of a loose power connection to the GPU but I've checked this and it's fine. I've also installed the latest drivers for the card and updated to the latest bios for my motherboard but still the issue persists.

Here's a shot of the rapid fluctuation of the RPM of the fan:
http://oi49.tinypic.com/2rws2n9.jpg

My specs:
Mobo: Asus P8Z77-V LX
GPU: Asus HD7850-DC-1GD5
Intel Core i5 3570K
Antec 520W High Current Gamer PSU
8GB RAM
1TB HDD

Any ideas? Thanks.

More about : 7850 fan rpm rapidly fluctuating games

April 7, 2013 9:28:11 AM

Well I've never seen a card that behaves quite like this. The fan speed isn't simply rising, and lowering like normal. It sounds like it's going from practically maximum to minimum speed every second. All graphics cards I've ever had experience with yes vary their speed, but don't constantly fluctuate so dramatically like this.
m
0
l
April 7, 2013 9:46:13 AM

LeeA92 said:
Hi, I've just made a brand new build and everything seemed to be going smoothly until I fired up a game. My GPUs fan starts to rev up and down very fast. While outside of a game the fan runs consistently and quietly. I did figure the possibility of a loose power connection to the GPU but I've checked this and it's fine. I've also installed the latest drivers for the card and updated to the latest bios for my motherboard but still the issue persists.

Here's a shot of the rapid fluctuation of the RPM of the fan:
http://oi49.tinypic.com/2rws2n9.jpg

My specs:
Mobo: Asus P8Z77-V LX
GPU: Asus HD7850-DC-1GD5
Intel Core i5 3570K
Antec 520W High Current Gamer PSU
8GB RAM
1TB HDD

Any ideas? Thanks.


From the picture it looks perfectly ok. That is how all cards behave.
If look closely the afterburner showing fan speed variation only when gpu is working and a rise in temp. this is how it should be, Your wondering why as you were not gaming right? Some times background apps or some webpage with Flash animation softwares like bitcon malware can use GPU so this happens with most of us. Keep a antivirus active and keep up to date with drivers is recommended.
Thanks

LeeA92 said:
Well I've never seen a card that behaves quite like this. The fan speed isn't simply rising, and lowering like normal. It sounds like it's going from practically maximum to minimum speed every second. All graphics cards I've ever had experience with yes vary their speed, but don't constantly fluctuate so dramatically like this.


Try setting up a custom fan profile in afterburner, see what happens.
Also why the TDP is - ? run the card @ default TDP or higher.
Also the fans are used in cards can very and so is how they behave.
I have experienced that sort of fan rpm dramatic :lol:  behaviour with Powercolor Radeon card, but don't see with my GTX 670 @ present.
I really don't see the reason to worry unless its producing whine/coil noise. Thanks

LeeA92 said:


Thanks for the reply, I've set up a user defined profile, it's reporting the fan speed % is consistent yet the RPM is still up and down all over the place and this is still very loud and noticeable. Here's another graph showing the RPM but i've increased the monitor update to 100ms so you can better see how rapidly that RPM is changing.
http://oi47.tinypic.com/2jesikm.jpg

And to make it clear it really is very loud when it's doing this, which I find hard to believe is normal for a card that one of it's main features boasted is being 'vastly quieter'.


If the noise is too high simply RMA
m
0
l
Related resources
April 7, 2013 10:03:04 AM

^ setting a custom fan profile is the right idea. Set it as a flat line that increases however much every 5 degress or so. Then it'll pretty much stay at a constant speed, which is kind of what I have mine do. Also, many GPU fans (mine included) can be a little funny. They'll run along at say 50% and you won't hear them at all, then they bump up to 55% and it might as well be on high they make so much more noise.
m
0
l
April 7, 2013 10:33:08 AM

mace200200 said:
^ setting a custom fan profile is the right idea. Set it as a flat line that increases however much every 5 degress or so. Then it'll pretty much stay at a constant speed, which is kind of what I have mine do. Also, many GPU fans (mine included) can be a little funny. They'll run along at say 50% and you won't hear them at all, then they bump up to 55% and it might as well be on high they make so much more noise.


Thanks for the reply, I've set up a user defined profile, it's reporting the fan speed % is consistent yet the RPM is still up and down all over the place and this is still very loud and noticeable. Here's another graph showing the RPM but i've increased the monitor update to 100ms so you can better see how rapidly that RPM is changing.
http://oi47.tinypic.com/2jesikm.jpg

And to make it clear it really is very loud when it's doing this, which I find hard to believe is normal for a card that one of it's main features boasted is being 'vastly quieter'.
m
0
l
April 29, 2013 6:49:36 PM

I am getting the same problem with my HD 6900. The fan is fluctuating dramatically the manual fan control doesnt seem to want to respond to my preferences. My graph in msi Afterburner also looks similar to the one you have posted. It is just very annoying and noisy.
m
0
l
!