Max temp for getting the normal life out of a video card?

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Message 1582403 - Posted: 6 Oct 2014, 5:20:45 UTC - in response to Message 1582271.  

Personally I won't run any video card above 70C, and preferably no more than 60C. Only had one die on me in all these years.



Yes, the cooler the better.

Just now, my 970 is crunching 4 mb's plus daily driver stuff at ~52c with the fans turning on a curve at 56% speed (almost total silence). Room temp is ~78f.

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Message 1582446 - Posted: 6 Oct 2014, 7:57:56 UTC

There are two exhaust fan on the top under the radiator, plus another 23cm as exhaust on top of it. I've thought that's too much heat being taken out of the box through the radiator. So I've added a 12cm intake on top to provide the radiator with air from outside the case. I've reversed the side fan once by mistake when I was still with a single GPU, the temps were actually higher. I am also trying to keep the default case setup as much as possible, since front, bottom and side (intake) have dust filters, which is a major issue here.




This is an old picture, but everything is still the same except the extra GPU and the bottom fan being removed. I've also removed all but two of the bay trays. I'll open the box and take new pictures today. Anyway, I've adjusted my fans profile, all case fans running on 100%, H100i in quiet mode, and GPU on 80%. Here are the results after 12 hours:
- CPU maintaining its temps in the 70's with some peaks in the 80 (overclocked to 3.9 GHz)
- Upper GPU: stable on 74
- Lower GPU: stable on 68

It's louder than I would like, and there's a lot of heat coming from top.
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Message 1582568 - Posted: 6 Oct 2014, 15:42:25 UTC

You should be moving hot air out of the case via the radiators not blowing it back in - the idea is to get the whole system as cool as possible.
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Message 1582582 - Posted: 6 Oct 2014, 15:58:49 UTC - in response to Message 1582568.  

You should be moving hot air out of the case via the radiators not blowing it back in - the idea is to get the whole system as cool as possible.


I know this seems like what you want to do but it is better the other way, bringing the coolest air in through the radiator into the case. This is because you have the coolest air possible cooling the coils that go to cool your electronics. If you have a complete water cooled system this is especially important. Taking the hot air from inside the computer to cool the radiator really makes no sense.

I only cool my cpu with the radiator and then I rely on the other fans to exhaust the heat from inside my case. This gives me the coolest cpu temperature possible. The gpu's cool from their fans and the fans that both bring in air and exhaust the air through the case. Keeping the air moving through the case really helps.

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Message 1582695 - Posted: 6 Oct 2014, 19:37:42 UTC - in response to Message 1576563.  

My four gtx-780's are running at 73-95 C. The case is open on both sides and a 16" table top fan is blowing air directly attached to them. The card #3 has its second fan jammed for after a year of 24/7 computing. I have had to resort to (with all of my 780's) boring a hole near the axel and spraying in some rust remover oil - it seems to help getting the fans rolling again. The #3 needs some re-oiling though.

The room temp is at 24-28 C in the computer room and the Seti rig keeps the whole house warm since the heat is sucked out from the ceiling vent and blown out after it has warmed up the intake air in the X-section of the house ventilation system.

You should see my machine back at the top of the charts when it has its RAC back to normal.

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Message 1582968 - Posted: 7 Oct 2014, 8:31:51 UTC

I've checked with MSI and they said it is normal to have the upper fan with higher temps, since I am limited by my motherboard to those two PCI slots. They also said I should keep the temps below 80 if I want boost to be functional, and provided me with a vbios update that I just flashed (though not sure what changes it brings).

In any case, I changed the top 12cm intake fan to a 23cm exhaust and set the GPU fans to 75%. The upper gpu settles on 75C and the lower on 65C while running SETI. I've changed the new GPU power slots ont he PSU as well (not sure if that has to do with anything). CPU is running slightly cooler now. I also had lots of driver crashes before I did the changes, but it seems to be fine now.

petri33, would you mind sharing some pictures of your setup and more information about your case/mobo and fan setup?
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Message boards : Number crunching : Max temp for getting the normal life out of a video card?


 
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