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Author Topic: 6990 rig - Should I run fan speed at 100%  (Read 1355 times)
mackminer
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June 30, 2011, 06:30:33 PM
 #1

Hi,
I have three cards running at 100% fan speed at the moment and the temps are 68 max. I still haven't overclocked them.

Any info greatly appreciated - thanks.

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gw4tt
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June 30, 2011, 06:34:44 PM
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You don't really have to run them 100% all the time. Just keep temps below 80C or so. (6990's run hot... Seems like you're generally not hurting anything till you go above 90C)
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June 30, 2011, 07:16:41 PM
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Yea I have 2 x 6950's and have set fan speeds using Afterburner. One seems to run at a higher temp than the other so atm 1 runs @ 61c @ 71% fan speed and the other @ 71c @ 91% fan speed. I could lower the temps further but then you have the noise issue to contend with. I think this setup of not quite full fan speed and < 71c temp to be a happy medium. At these settings my cards arent being hammered and they can run all day like this (they could run @ even higher temps safely) w/o fear of component failure.

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Wildvest
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June 30, 2011, 07:25:29 PM
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i'm running 12 x 6990 at the absolute edge in overclocking mode (power, temp) - they are all running at 100% 24/7 - unfortunately i have to clock down if the ambient temp is rising, but i use a script for that - a few pic: http://imgur.com/a/usqDL
gochk
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June 30, 2011, 07:46:24 PM
 #5

i'm running 12 x 6990 at the absolute edge in overclocking mode (power, temp) - they are all running at 100% 24/7 - unfortunately i have to clock down if the ambient temp is rising, but i use a script for that - a few pic: http://imgur.com/a/usqDL

I love this pic http://i.imgur.com/fevHc.jpg

Would you care to share your script(s) or how you show temperatures and the last picture where it shows V (is that volts?)?
mackminer
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June 30, 2011, 09:59:32 PM
 #6

i'm running 12 x 6990 at the absolute edge in overclocking mode (power, temp) - they are all running at 100% 24/7 - unfortunately i have to clock down if the ambient temp is rising, but i use a script for that - a few pic: http://imgur.com/a/usqDL

Sorted.

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bcforum
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June 30, 2011, 10:45:44 PM
 #7

Hi,
I have three cards running at 100% fan speed at the moment and the temps are 68 max. I still haven't overclocked them.

Any info greatly appreciated - thanks.

Yes, run the fans at 100%. You'll get more lifetime from the cards with lower temperatures, but the fans might wear out sooner.

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Wildvest
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June 30, 2011, 11:00:04 PM
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i'm running 12 x 6990 at the absolute edge in overclocking mode (power, temp) - they are all running at 100% 24/7 - unfortunately i have to clock down if the ambient temp is rising, but i use a script for that - a few pic: http://imgur.com/a/usqDL

I love this pic http://i.imgur.com/fevHc.jpg

Would you care to share your script(s) or how you show temperatures and the last picture where it shows V (is that volts?)?

sorry for the OT

the bash script for the autom. clock control (based on temp) is from the forum here, but i don't have the thread in mind, you may try the forum search function

the lower terminal windows are the output of lm-sensors (took me 2 days to fix all the kernel and driver stuff :-( ) - important for me is that temp sensor, it give me some estimate about the ambient (server room) temperature - the A/C is a old lady already  Undecided

the V - yes that are Volts, since there is nowhere a hwmon for the 12V, i use the 3.3 V reference as a guessing - in idle it is around 3.3, below 3.10 the motherboard or the cards crashing frequently, so it is a good guess ;-)
gochk
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July 01, 2011, 03:51:35 AM
 #9

I think my card's temp is an issue. But I have no idea how to fix it. I currently only have 1 6970 and when it's mining it's at 90-92 C range. But when I stop mining, it gradually drops to low 50s. Reading this thread, it seems like 61 C and 71 C is the range 6990 should be in. 6970 is even less hash power than 6990; under that logic, should the temps be lower?

But how do I fix the issue? For Win system, people use MSI Afterburner to control the GPU fan; but what does Ubuntu (Linux) use? I looked at MSI Afterburner and it doesn't look like they have a version for Ubuntu. So I youtube and found out people use LM-SENSORS. I haven't tried setting that up; but the whole clip looks weird.

Anyways, enough of my ranting. As usual, I welcome any and every advise.
PalmerEldritch
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July 01, 2011, 03:58:08 AM
 #10

i'm running 12 x 6990 at the absolute edge in overclocking mode (power, temp) - they are all running at 100% 24/7 - unfortunately i have to clock down if the ambient temp is rising, but i use a script for that - a few pic: http://imgur.com/a/usqDL

Why are you running 12 6990s may I ask? Got a need for speed?
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