overheat concern

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wgan
Posts: 1
Joined: Thu Apr 28, 2011 4:16 am

as i suppose octane runs card in full load (even heavier than those most resource demanding games) and considering the nature of long rendering, will the card be overheat working with octane for a certain period of time? (not expecting some suggestions like getting an expensive watercolling system although that might be the only option to stay away from being burnout)
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abstrax
OctaneRender Team
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Joined: Tue May 18, 2010 11:01 am
Location: Auckland, New Zealand

wgan wrote:as i suppose octane runs card in full load (even heavier than those most resource demanding games) and considering the nature of long rendering, will the card be overheat working with octane for a certain period of time? (not expecting some suggestions like getting an expensive watercolling system although that might be the only option to stay away from being burnout)
If the (air) cooling is set up correctly and the hot air gets continuously removed from the case, there should be no problem. At least as long as the room temperature has reasonable values.

If you want to be sure: Get the demo version and demo suite and render one of the demo scenes, while watching the GPU temperature (there are several tools available for this). If the temperature stays under 95C (depending on the GPU of course), there should be no problem.

Cheers,
Marcus
In theory there is no difference between theory and practice. In practice there is. - Yogi Berra
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Jaberwocky
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Joined: Tue Sep 07, 2010 3:03 pm

wgan wrote:as i suppose octane runs card in full load (even heavier than those most resource demanding games) and considering the nature of long rendering, will the card be overheat working with octane for a certain period of time? (not expecting some suggestions like getting an expensive watercolling system although that might be the only option to stay away from being burnout)
Try under volting the card using MSI afterburner.Not sure how much you will achieve but I managed to knock 6 Deg C off my temps when the card is running at full tilt by lowering the voltage of my gigabyte GTX460 1mb from it's stock 950mv to 875mv.Tested and it has been running stable at that voltage in Games and Octane for a month.It may be a bit of trial and error though depending on what make and model of card you have.Also check your cabling in the chassis, as untidy cabling can play hell with the airflow in the case.If you have ribbon cables,replace them with round ones.Use cable tidies to bunch them up and move them out of the way of the airflow.Most modern gaming cases have holes to run the cables out of the way behind the motherboard.Maybe look at replacing the case fans with higher CFM units.If you have 2 cards in your system.Try and space them as far apart as possible as cards close to each other can cook each other.Last option as you suggested would be to replace the coolers on your card.Though in the case of recent Nvidia cards the stock coolers are quite efficient as they use vapour chamber cooling.Certainly they had to be for the 470/480's anyway:lol:

Lastly look at your power supply.If it's an old cheap and cheerful one it may be inefficient and would be contributing to the heat in your case,it may be as much as 70% power out and 30% heat out.Hi grade 80 plus Bronze / silver or Gold rated power supplies are high efficiency units producing 80-90% power out and only 10%-20% heat.They save on electric bills as well.

Hope that helps
CPU:-AMD 1055T 6 core, Motherboard:-Gigabyte 990FXA-UD3 AM3+, Gigabyte GTX 460-1GB, RAM:-8GB Kingston hyper X Genesis DDR3 1600Mhz D/Ch, Hard Disk:-500GB samsung F3 , OS:-Win7 64bit
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r4ytrace
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Joined: Thu Jan 20, 2011 12:42 am

I use rivatuner and force my GPU fan to constant 75% before I render...
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