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AXPs in SLI on 2x GTX 480 Heat Issue - Page 2

post #11 of 41
Thread Starter 
Alright, so then an extra fan blowing towards the back of the case onto my cards is the next step.

It's now between the GT AP-15: http://www.newegg.com/Product/Product.aspx?Item=N82E16835185092

or the TY-140: http://www.svc.com/tr-ty-140.html

To see which will get the job done better.

Still waiting on hodgoes2001's response.
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post #12 of 41
Hey all...

I have just replied to ChicAgoHawk

I have been sleeping tongue.gif

anyways....

it wasn't 91 Deg C...

it was 71 Deg C....

and then my fan profile dropped it down...

it was setup and still it setup to max my fans when it goes over 70 Deg C...

so hence the sudden drop...

also i used Kombuster to bench the cards...

I have run a new test today... it is a bit warmer here then it was when i ran the test initially...

anyways...

the max temps of both cards today with the same OC is 74 Deg C for the top card...

and 70 Deg C for the bottom card...

I have set all the fans in my case and on the cards to 100% for the test... so it is more stable

MSI%252520Afterburner%252520OC.png

anyways...

I am out of ideas of why he's rig is 20 Deg C different in temp between the cards..

I will test out different fan positions today and get back to you all on what i find
post #13 of 41
Thread Starter 
What grunion and I were referring to is this:

temp1y.png

At one point your card did hit 91C

and then on your new test, you hit 83C:

temp2g.png


That's what I'm wondering about.
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post #14 of 41
woops... i see what you mean...

never actually noticed that..

i have had my pc on for the last 6 days...

so i am not sure when that 83 Deg C occurred

normally i run a custom fan profile with my case fans at min...

so it must of happened during gaming...

i suspect while playing Dirt 3 maxed on tri head.... (it tends to run my gpus at 99 % constantly

as for the time i got 91 Deg C.....

i haven't got the faintest idea...

it was such a long time ago...

the only thing i can think of is.. that i turn my case fans off at night due to the lights

so if i forgot to turn them back on (easy to do when your case it behind 3 screens) i would of got a high temp...

but really.. i am just guessing...
post #15 of 41
Thread Starter 
To me that would indicate case fans are saving the temps for you.

I just thought of an idea, and took one of the GT AP-15s from my H70 and mounted it in the exact position Draygonn had his...and the results were disappointing. 100C top card and 67C bottom card. Nothing changed. I'm completely lost right now...
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post #16 of 41
Quote:
Originally Posted by ChicAgoHawk;13912755 
I just thought of an idea, and took one of the GT AP-15s from my H70 and mounted it in the exact position Draygonn had his...and the results were disappointing. 100C top card and 67C bottom card. Nothing changed. I'm completely lost right now...

frown.gif
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post #17 of 41
try to reaseat the first cooler...maybe you have use lot of TIM or maybe yo need to add a little bit..

there is big difference between those temps

OC is same on both?
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post #18 of 41
Thread Starter 
I've already ruled that out. As I mentioned, both cards were tested individually in the case and maxed out individually at 67C on Furmark. Great cooling...the problem lies within the sandwich that has been created.

Both cards were at stock when tested and were actually undervolted to 1.025V.
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post #19 of 41
try one thing...grab some 120mm fan, run the furmark and place the fan so air will go directly between cards or put it in front of GPUs so hot air will move between cards...if this will make any difference you know what is problem
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post #20 of 41
Thread Starter 
I already did that one too tongue.gif , please read above. I put one of my AP-15s on the HD cage and it made zero difference frown.gif.

I did just think of a new idea though. I took this huge industrial fan I have, which is about the same size of my HAF-X, took off the side panel and replaced it with that fan to see what would happen. The fan of course moves more air than my AP-15 or my 200mm, but also has much higher pressure than my AP-15 (just by putting my hand up to it tongue.gif, I don't know the actual specs of the fan).

Idle, it took the top card down to 40C (turned off my dual monitors for better measuring)...and my bottom card idles at 36C...that's a 4C difference, that's how it should be! So I had high hopes about the Furmark test. Well, Furmark took the card to 85C maxed out (66C on the bottom card). 15C drop in temperature. At least I know now SOMETHING can move air under that top card. I just have to figure out what kind of case fan I can use to replace the 200mm one to do the same job the ear bleeding industrial fan is doing right now.

EDIT: Put one of my AP-15s on my side panel in place of the 200mm to see if temps improved. They improved slightly...95C on the top card, 5C decrease. I'd love to get 2x 120mm or 2x 140mm on that side intake, like nagle3092 mentioned, but that's difficult. I can't fit them on the side panel the current way it is...as there's only room for up to 200mm x 200mm. If I did mount them, part of the intake of both fans would be blocked by the side panel and I don't know if that would affect air flow too much. Or, I'd have to find a panel that fits both fans and fits on the HAF-X or make a mod of my own...and I'm no pro when it comes to modding that involves drilling or cutting acrylic glass...
Edited by ChicAgoHawk - 6/18/11 at 5:11pm
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