17" GPU fan died yesterday

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Profile petri33
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Message 1695205 - Posted: 24 Jun 2015, 17:10:40 UTC

Got home today and wondered why it was so cool and quiet here.

My machine had stopped working because of CPU overheat protection. But not soon enough. There will be a lot of calculation errors on CPU tasks. The GPU fans have died a long time ago and are cooled with a 17" tabletop fan blowing air directly to them.

The old broken tabletop fan is now replaced with a new one.

The machine is reporting old tasks (some failed) and loading new ones.
To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones
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Message 1695213 - Posted: 24 Jun 2015, 17:19:20 UTC - in response to Message 1695205.  

Sorry to hear that Petri...

I have 200 mm pushing air directly over my GPUs as well. Glad there wasn't any malfunctions with the computer components.

Zalster
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Message 1695218 - Posted: 24 Jun 2015, 17:48:27 UTC

My solution is a bank of four 150mm fans in the side of the case.....

(room may be noisy, but I'm never i there to find out...)
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Message 1695220 - Posted: 24 Jun 2015, 17:51:18 UTC - in response to Message 1695218.  

My solution is a bank of four 150mm fans in the side of the case.....

(room may be noisy, but I'm never i there to find out...)


I have got a customised side panel with four 21 cm fans but they are not as powerful as the tabletop fan.

And yes, no harm to other components.
To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones
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Message 1695227 - Posted: 24 Jun 2015, 18:13:13 UTC

It is better to have a desktop fan blowing into the open side at a distance of 0.5m or so.
Having fans mounted to the (enclosed) case only produces hot air feedback, as the air going out is sucked around the case and blown in again.
An open case is always better than a closed one(from my experience).
If you have a fairly directional desktop fan(and enough room), you can move the desktop fan even further away(at a 45 degree angel to the case, if you can).

This is to get the hot air out of the case.(leave as much room around the open side of the case, as you can, to allow the warm air to escape)
You still need fans mounted directly to the heatsinks to get the heat out of the devices themselves(this is most essential).

Watch the temps, and you will see, that it works.
(If you have the space around the computer, that is)
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Message 1695279 - Posted: 24 Jun 2015, 21:24:16 UTC

Here is the sidepanel (not in use) and the old fan.

http://setiathome.berkeley.edu/forum_thread.php?id=73909&postid=1635858
To overcome Heisenbergs:
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Message 1695284 - Posted: 24 Jun 2015, 21:41:54 UTC

Have you tried to take the fans out of the card or is this too difficult for you.
Do you have a better picture of your card, mabe a link to a website?
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Message 1695289 - Posted: 24 Jun 2015, 21:54:27 UTC - in response to Message 1695284.  

looks like he has asus GTX780-DC2OC-3GD5
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Message 1695298 - Posted: 24 Jun 2015, 23:07:51 UTC - in response to Message 1695289.  

looks like he has asus GTX780-DC2OC-3GD5


That is the card. I have removed the metal shield and the malfunctioning fans.
It is easier to replace a tabletop fan once every half years. That's what they seem to last even when lubricated with Mobil 1 rally formula 5W-50. Maybe I should re-apply the oil weekly every tuesday :)
To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones
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Message 1695415 - Posted: 25 Jun 2015, 7:44:12 UTC

The problem with the fans are not only lack of lubrication, but also dirt buildup, which kills most GPU/CPU fans.
You should wash the fans.
I have done this a number of times and i works great.
Make some warm/hot water with dish-washing detergent(if you can keep your hands in, it is not too hot).
Put them in and spin them by hand.Turn them around and make sure, all the air gets out.
Leave them in the water for 20-40 minutes and keep spinning them again(in the water).
Rinse them and soak them in clean warm water.Spin them in the water.(by hand)
Repeat that with new water.

Then, get them out to dry.Shake them a bit and use a hair drier ON COLD SETTING
to blow them dry.(Or any other source of cold air)
It is important, that they spin, otherwise you cannot get the water out.
Make sure, they are absolutely dry, before you put them back.

After a few days of use, you can put some oil on.


(Do not ever do that with mains powered fans! This is for low Voltage brush less DC fans only)
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Message 1695423 - Posted: 25 Jun 2015, 7:59:27 UTC - in response to Message 1695415.  
Last modified: 25 Jun 2015, 8:30:37 UTC

I have not bought a 120mm fan for years now.
The ones I bought back then have a little rubber button over the bearing. Sleeve bearings. And if they start to squawk, I just peel the label off, pry the button out and give them a few drops of oil commonly used by furnace technicians...google 'zoom spout oiler'.

Let it soak into the bronze bearings for a bit, spin the fan a little by hand, and pop the rubber button back in.
Wipe off the excess oil that squishes out, and they are good to go for another 6 to 12 months or sometimes more running 24/7.

They were Scythe Ultrakaze 120 x 38mm, 3000rpm 133cfm fans. Doubt you can get them anymore. They are a little noisy, but I was after performance, not silence...LOL.

I have not googled the part number yet....DFS123812H-3000.

If you can still find them, they will run, like, foreeeeeeeeeeeeeever given a little bit of oil now and then...
"Learn from yesterday. Live for today. Hope for tomorrow." Albert Einstein
"With cats." kittyman

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Message 1696084 - Posted: 27 Jun 2015, 1:20:59 UTC

No problems. Checked newegg and found the fans. You are right about being a little noisy. But for $13.00, I can stand a bit noisy.

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Message 1696089 - Posted: 27 Jun 2015, 1:35:53 UTC

if you double the rotational speed then you will get double the airflow and double the noise level
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Message 1696091 - Posted: 27 Jun 2015, 1:41:11 UTC - in response to Message 1696084.  
Last modified: 27 Jun 2015, 1:47:06 UTC

I like these ones.
Not as much air flow, but very quiet & run forever.


Maglev bearing fan

Or you could use a 3,000RPM, 106CFM fan with ball bearings. Lubrication never required.
Grant
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Message 1696093 - Posted: 27 Jun 2015, 1:43:52 UTC - in response to Message 1696091.  

The other option for a large fan with lots of airflow would be a radiator fan for a car.
They run on 13V & shift a huge amount of air, along with a ridiculous amount of noise. Put in a resistor to drop the supply voltage to 9V or so & you would still have a huge amount of airflow, for not too much noise.
Grant
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Message 1696094 - Posted: 27 Jun 2015, 1:59:45 UTC - in response to Message 1696091.  

I like these ones.
Not as much air flow, but very quiet & run forever.


Maglev bearing fan

Or you could use a 3,000RPM, 106CFM fan with ball bearings. Lubrication never required.

Nice fan
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Message boards : Number crunching : 17" GPU fan died yesterday


 
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