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Message boards : Problems and Help : GTX 260 running at 199 F - how to reduce heat output?

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Profile DavidVR
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Message 45497 - Posted: 22 Dec 2011 | 23:31:30 UTC

I have two GTX 260s running PrimeGird, and very often one of them will be at or very close to 200 F. Is this safe? Both fans are at 100%.

What can I do to reduce heat output?

Brook HarsteProject donor
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Message 45498 - Posted: 22 Dec 2011 | 23:39:53 UTC - in response to Message 45497.

I have two GTX 260s running PrimeGird, and very often one of them will be at or very close to 200 F. Is this safe? Both fans are at 100%.

What can I do to reduce heat output?

My GTX 470 runs at 91C or 195F in Linux. It seems to run just fine for me. It's been running that way for over a year now. My fan is running at 64%. If I could get it to run faster I would but I have not found a good utility or decent instructions on how to get the speed of that fan up in Linux.
____________

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Message 45499 - Posted: 22 Dec 2011 | 23:39:55 UTC

Add a large noisy fan to feed cold air into the case, and another to exhaust the heat ?

Or go to water cooling if you fancy a challenge. I have an old 8800GTS that I use for Einstein@home as the load allows it to run without melting.

dunx

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Message 45503 - Posted: 23 Dec 2011 | 3:03:32 UTC - in response to Message 45497.

I have two GTX 260s running PrimeGird, and very often one of them will be at or very close to 200 F. Is this safe? Both fans are at 100%.

What can I do to reduce heat output?

Without doubt replace current case fans with high pressure fans - they are very good now given shopping wisely.

The case is like an enclosed oven with no airflow. The absolute key factor is airflow, get it out of the box before it heats up more. Good air flow will produce a better bang for your buck than any other initial cooling solution, and is too often not taken into account with the desire for goodies inside the case.

Get ones with a pressure rating of 65-90 .... noise will be acceptable-good if you do your research and buy the better end of the fan market with well designed fan blades. Expect to pay around £15 / $20 for a good fan. Cheap fans are a waste of time as they dont push through the air quick enough, and have cheap baring. A quality fan will give you very long life with solid reliable barings, many good fans are efficient at repelling dust, a nice plus point.

When you do it - pay close attention to internal layout and get items out of the way of the direction of air flow else it negates much of the effect. Design it so you push air in at the front, pull it out from the back fan and top case fans.

I recently rebuilt my boxes, and replaced the fans I had with 6 high pressure fans (pressure rating of 75), its working a treat - a 3960x and twin 5970 7x24 with mid-range overclock in a tower case, and the pull fan airflow is only luke warm, at night hardly feel it - push fan grids are physicaly cold, like a fridge. If you are concerned about noise, read the fan reviews carefully, buy one to see how it goes, and follow on with more.

Above a pressure rating of 100 you will markedly notice the noise. 130-150 and its like a banshee wailing - dont go there rofl. Stay with 65-90 rating and you'll be fine, you will hear it, but its ok especially as on board PWM can then actually work and not stay stuck on 100%

Regards
Zy

Profile DavidVR
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Message 45514 - Posted: 23 Dec 2011 | 6:55:29 UTC

Thank you all for your help.

Message boards : Problems and Help : GTX 260 running at 199 F - how to reduce heat output?

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