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Why are my fans so loud?

post #1 of 16
Thread Starter 
I had a 6870 and when I went to play games like rift or battlefield 3 on the highest settings it wouldn't be loud at all and it would play at around 25-35FPS on both games.

Ever since I got another 6870 whenever I play games (rift, crysis, battlefield 3) the fan speeds on the GPU's are EXTREMELY LOUD. I can hear them running through my noise canceling head set and you can hear it from two rooms over... Why? It wasn't doing this when i had one.

Not only that but playing bf3, crysis, rift, bf2, cod black ops etc. on the max settings i'm really disappointed. I still get bad FPS and at some times I feel like the crossfire isn't even working and it feels as if it was using one.

Whenever I try to check if its working though it says its enabled, the icon appears on the top right... idk maybe im just bugged that it's not like a performance two 6970s would offer but idk... maybe im also just putting bad thoughts in my head.
Edited by Xerent - 10/5/11 at 8:52am
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post #2 of 16
Quote:
Originally Posted by Xerent View Post
I had a 6870 and when I went to play games like rift or battlefield 3 on the highest settings it wouldn't be loud at all and it would play at around 25-35FPS on both games.

Ever since I got another 6870 whenever I play games (rift, crysis, battlefield 3) the fan speeds on the GPU's are EXTREMELY LOUD. I can hear them running through my noise canceling head set and you can hear it from two rooms over... Why? It wasn't doing this when i had one.

Not only that but playing bf3, crysis, rift, bf2, cod black ops etc. on the max settings i'm really disappointed. I still get bad FPS and at some times I feel like the crossfire isn't even working and it feels as if it was using one.

Whenever I try to check if its working though it says its enabled, the icon appears on the top right... idk maybe im just bugged that it's not like a performance two 6970s would offer but idk... maybe im also just putting bad thoughts in my head.
It's possible that because you have 2 cards now, it's making the case ambient temperature higher, which would make your cards hotter, which would increase fan RPM, which would make more noise. What are temperatures like? Are the fans on auto or manual speed?
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post #3 of 16
Is there a slot between the two 6870s? If not they are choking from lack of airflow and fans have to ramp up to compensate.
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post #4 of 16
Yeah like WBaS said,

If you have two cards running there will be extra heat, and if the fans are set to manual in CCC they can be very loud at times,

Recommend keeping an eye on your temps to see what they are like, and adjust the fan speed manually so you can get a good mix between the noise the fans produce and also keeping them at a reasonable temperature when playing
post #5 of 16
It may be time to review your overall case fan setup, make sure you have a good flow especially in the vidcard zone.
post #6 of 16
Thread Starter 
Quote:
Originally Posted by 1greeny1 View Post
Yeah like WBaS said,

If you have two cards running there will be extra heat, and if the fans are set to manual in CCC they can be very loud at times,

Recommend keeping an eye on your temps to see what they are like, and adjust the fan speed manually so you can get a good mix between the noise the fans produce and also keeping them at a reasonable temperature when playing
Yeah I have them set to auto in rivatuner without overclock. I don't want to do manual because I'm afraid i'll make the GPU's extremely hot but I suppose I'll take some time later today to get a nice manual speed where the GPU's don't heat up too much.

As for the temps while hardcore gaming the fans are freaking loud as hell and the temps go up to 70-80 degrees. Is that normal?

Also the GPU's are seperated by a slot so there should be no air flow problem
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post #7 of 16
Thread Starter 
For the case I have one fan, a fan on my psu, a heatsink/fan on my cpu, the prebuilt fans on my 6870s, and that's all. The airflow should be good as everything is pretty separated in a HAF912 and no cables/cords from the PSU are in the way of everything.

I also cleaned out all the dust and whatnot.
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post #8 of 16
Quote:
Originally Posted by Xerent View Post
Yeah I have them set to auto in rivatuner without overclock. I don't want to do manual because I'm afraid i'll make the GPU's extremely hot but I suppose I'll take some time later today to get a nice manual speed where the GPU's don't heat up too much.

As for the temps while hardcore gaming the fans are freaking loud as hell and the temps go up to 70-80 degrees. Is that normal?

Also the GPU's are seperated by a slot so there should be no air flow problem
I'm not sure what these usually run as far as temps, but 80 degrees is probably enough that the fans are running 100% speed (or close to). If the noise bothers you, you may want to consider after-market cooling... bigger fans make a huge difference in dBs!

EDIT: Only 1 case fan eh? Is this an exhaust fan on the back? It might help to get a front intake fan as well. You should fill in your system hardware by going to User Control Panel, Edit System. That way we can see your stuff
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post #9 of 16
Quote:
Originally Posted by Xerent View Post
For the case I have one fan, a fan on my psu, a heatsink/fan on my cpu, the prebuilt fans on my 6870s, and that's all. The airflow should be good as everything is pretty separated in a HAF912 and no cables/cords from the PSU are in the way of everything.

I also cleaned out all the dust and whatnot.
Anything on the side, over the cards? It often helps, especially in multi-card setups. The top card can only get cool air if the cool air can get to it.

Your case is designed to be a wind tunnel. Help it live up to its potential.
post #10 of 16
Thread Starter 
I edited my system so you can look at it now. The case actually has two fans in it.

Quote:
The Cooler Master HAF 912 features one front and one rear 120mm fans and support another front 120mm (two front fans can be swapped for one 200 mm fan), one side 120/140mm and two top 120mm ( or one top 200mm ) fans for peerless air cooling performance. The HAF 912 also has pre-drilled outlets and retaining holes, and accepts two external radiator 120mm fans for building water cooling system.

Also I suppose I could rearrange the cords of the PSU but i don't think it would help much.
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