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Author Topic: How to resolve overheating with sapphire 5830?  (Read 1313 times)
bitmonster2
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June 27, 2011, 02:41:25 AM
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I recently purchased 3 sapphire 5830 hd xtreme 1gb and was setting up my new rig using unbuntu but they all seem to have a cooling problem. They reached 92 celcius while mining but their idle temp is very low (32.5 C). They are within 8 digits of eachother on their serial code so the only thing i can assume is the thermal compound was not applied correctly? Has anyone else had this problem and if so what did you do? i do not want to reapply the thermal compound because it will void the 2 year warranty and need this resolved asap.
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bcforum
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June 27, 2011, 02:45:01 AM
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Why do you think 92C is too hot? Do you have data to back it up?

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fascistmuffin
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June 27, 2011, 03:22:57 AM
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What GPU clock, memory clock, and voltage are you running at?
sabe
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June 27, 2011, 03:37:36 AM
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1) Downclock memory to 300Mhz if you haven't already
2) If you're not using extenders, then you need to space out your cards a little, jam some foam peanuts, bits or plastic or something around 1/4" thick between the cards if they're too close.
3) Set fan speed to at least 60~70%, or 100% if you can tolerate the noise.

My ambient is regularly above 30C (I live on the equator) and my cards don't even hit 80C

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tool_462
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June 27, 2011, 09:47:58 AM
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First thing I do when getting new (high end) graphics cards (have built maybe 800 computers over the years, lots of cards) is to take the heatsink off, clean the GPU and re-apply TIM.  Most cards will benefit 5C+ (some are drastic, 15C drop in temps) from switching to new TIM.

I've also RMAed a few dozen cards, all of which had "aftermarket" TIM and some of which had aftermarket cooling (ie: waterblocks) and never had a problem with warranty. 

If you don't want to swap TIM (takes about 3 minutes on those Sapphire cards, real easy heatsink to remove) have you made a custom fan profile in Afterburner?  Or forced high fan speed?

Rob P.
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June 27, 2011, 12:28:44 PM
 #6

I recently purchased 3 sapphire 5830 hd xtreme 1gb and was setting up my new rig using unbuntu but they all seem to have a cooling problem.

Under Ubuntu, try this:

For GPU 1:
% DISPLAY=:0 aticonfig --pplib-cmd "set fanspeed 0 100"

For GPU 2:
% DISPLAY=:0.1 aticonfig --pplib-cmd "set fanspeed 0 100"

My 5830s will run hot unless I set the fan speed higher. 

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KaptainBlaZzed
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June 27, 2011, 02:39:10 PM
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1) Downclock memory to 300Mhz if you haven't already
2) If you're not using extenders, then you need to space out your cards a little, jam some foam peanuts, bits or plastic or something around 1/4" thick between the cards if they're too close.
3) Set fan speed to at least 60~70%, or 100% if you can tolerate the noise.

agreed, did the same thing to reduce my 5830's temp.

also replace the TIM.

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deepceleron
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June 27, 2011, 11:24:05 PM
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Cut a hole in the side of your case and put in a 200mm fan blowing on all the cards.



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July 01, 2011, 03:30:26 PM
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5 options

1. Underclock the ram. If you are using a 5830 you should set it around 300.
2. Set the fans at 85% or higher. Mine are all at 93%. (My core is 990+ with mem at 300)
3. Run 1 or 2 fans from the end of the cards, points towards the dvi/hdmi end, so the air flows between the cards.  This drops the temp very nicely also.
4. PCI-E extenders, can dramatically drop the temps when you don't have 4 cards smashed together. We are talking 10-15C depending on your setup.
5. Apply new thermal paste (TIM) to your GPUs/Heatsink.

Doing 1-3 should lower your temps to consistently under 85C or lower, depending on your ambient temp.  In one the rooms which I close the door, it has to be over 100F, but the temps on the hottest card never reach 85C.
I have 1 card using a PCI-E on a box and the max temps are in the low 70s, while using steps 1-3 also.
I have yet to do step 5, simply because my cards are running 24/7 and I haven't taken the time to shut down the systems and go through the process of applying TIM.
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