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Heat problems.. big time.

metigue

metigue

metigue

Associate
Joined
3 Oct 2011
Posts
100
6950 trifire,

My first GPUs max temp is about 60 this makes sense as it has it's two fans going out into open air,

However my other two cards max temps are 102 + 103 degrees...

I definitely feel it's the third GPU blowing hot air into the back of the second
as the third idles much hotter and is a different brand to 1 and 2

Needless to say I'm a little bit worried..

These max temps were achieved running unigine 2.5 on MAX settings.

Do I need to be as worried as I am?
 
you need a fair bit of direct airflow onto the cards along with something to make sure there is a gap between each of them, might be worth posting some pictures of the setup inside your case so we can get a better idea of the choices available to you.
 
Probably the poor PCI-E slot spacing on your motherboard.

Looking at the layout you probably don't have any gap between the cards so the cards are being "cooled" by the hot air from the card below it.
 
My case is a full tower, but I'm finding myself really cramped for space.

I really think if I had 3 MSI's it would solve the heating problem, as the xfx only has one terribad fan

2mpbpna.jpg


Contrary to what you might think, the one in the middle is only second hottest on idle and load, by about 10-20 degrees both times, The card before it (XFX) black one is the hottest by a clear mile, and the card on the end is much colder.
 
I'd try putting the XFX in the bottom slot with clear airflow.

It might even up the temperatures a bit.

I see you're fond of the molex to PCI-E adapters ;)
 
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@metigue

You're not allowed to offer items for sale outside the Members Market for which you need 90 days forum membership and 250 posts.

I suggest you edit your post before the Mods. see it.

Also why is your CPU cooler in that orientation?

They usually work better rotated through 90 degrees with the fans blowing towards the back of the case.

As it is you're either blowing hot air on to the graphics card or sucking hot air from the graphics card to cool the CPU.
 
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Surveyor said:
@metigue

You're not allowed to offer items for sale outside the Members Market for which you need 90 days forum membership and 250 posts.

I suggest you edit your post before the Mods. see it.

Also why is your CPU cooler in that orientation?

They usually work better rotated through 90 degrees with the fans blowing towards the back of the case.

As it is you're either blowing hot air on to the graphics card or sucking hot air from the graphics card to cool the CPU.
Click to expand...

I can't turn it because I can't fit the ram in otherwise x.x
It should be sucking hot air from the graphics cards, but I'm not that fussed, my 5ghz load temps are 50-60 degrees with that cooler
 
metigue said:
I can't turn it because I can't fit the ram in otherwise x.x
It should be sucking hot air from the graphics cards, but I'm not that fussed, my 5ghz load temps are 50-60 degrees with that cooler
Click to expand...

The last post I saw in your "Come watch me overclock my new system" thread your CPU core temperatures were up to the mid 60's @ 4.7GHz.

How have you overclocked higher and yet reduced the temperature at the same time?

FYI your signature needs sorting out, you're only allowed to use 4 lines of text.

You might consider turning your PSU over 180 degrees. It looks like the bottom of your case is vented so the PSU can draw in cool air from outside.

It should work better unless your case sits on the carpet allowing little airflow.

Finally, why are you using all those molex adapters?

Your PSU comes with 6 PCI-E power cables which are perfect for your 3 cards.
 
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Judging by the orientation of the cpu cooler fans it looks like they're blowing air down onto the graphics cards, look at the arrows on the fans to check.
 
Judging by the airflow battle going on in that case I'm not surprised your temperatures are all wrong.

The mass of cables powering the graphics cards can't be helping airflow.

What airflow is up front? Do you have side panel airflow?

Turn the CPU heatsink fans around so they blow towards the top venting fan. In this configuration your CPU warms some air and throws it all over the Graphics cards. The top mounted fan is battling against the Noctua fan and probably losing.

Follow the convention of front/bottom fans as intake and rear/top as exhaust. Your CPU cooler must follow the same convention. A side mounted fan can be pointed either way as it generally messes up airflow anyway, but may be required for multiple graphics card installations.
 
Tealc said:
Judging by the airflow battle going on in that case I'm not surprised your temperatures are all wrong.

The mass of cables powering the graphics cards can't be helping airflow.

What airflow is up front? Do you have side panel airflow?

Turn the CPU heatsink fans around so they blow towards the top venting fan. In this configuration your CPU warms some air and throws it all over the Graphics cards. The top mounted fan is battling against the Noctua fan and probably losing.

Follow the convention of front/bottom fans as intake and rear/top as exhaust. Your CPU cooler must follow the same convention. A side mounted fan can be pointed either way as it generally messes up airflow anyway, but may be required for multiple graphics card installations.
Click to expand...

Oh I didn't realise the direction they were blowing the air, I have 3 side fans, one 20cm directly on the graphics cards and two 12cm directly on the hard-drives

I have a 14cm fan at the front

Surveyor said:
The last post I saw in your "Come watch me overclock my new system" thread your CPU core temperatures were up to the mid 60's @ 4.7GHz.

How have you overclocked higher and yet reduced the temperature at the same time?

FYI your signature needs sorting out, you're only allowed to use 4 lines of text.

You might consider turning your PSU over 180 degrees. It looks like the bottom of your case is vented so the PSU can draw in cool air from outside.

It should work better unless your case sits on the carpet allowing little airflow.

Finally, why are you using all those molex adapters?

Your PSU comes with 6 PCI-E power cables which are perfect for your 3 cards.
Click to expand...

I was at 4.7 with very weird settings, I reduced vcore and standardised some other values, which reduced temperatures and found I could still stably clock higher, increasing vcore did not increase the temperatures too much with the new standardised values, I was quite pleased.

The PSU fits in much better this way round, and this way it takes in hot air and expels it through the bottom of the case.
 
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Not sure if it will help as your graphic cards are VERY close to each other, but I found my Crossfire a little hot (larger gap than yours) with the stock fan profile. By creating a custom fan profile in Afterburner my PC got a lot noisier when pushed (as expected), but dropped the cards' temperatures by around 20' at full load.
 
I can't turn the CPU cooler or I lose all the ram slots,
Click to expand...

Then don't, Tealc put:-
Turn the CPU cooler fans around so they blow towards the top venting fan.
Click to expand...
So just do that, turn the middle fan around (on the CPU cooler) so it blows up instead of down, then turn the fan at the top around (on the CPU cooler) so it blows up instead of down and if possible put this fan at the bottom of the cooler instead of the top. You may be able to do this without removing the cooler from the CPU, if not you might as well turn the whole thing 180°.

LOL, you figured it and changed your post whilst I was posting this, advice/explanation still relevant.
 
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BlackBat said:
Then don't, Tealc put:- So just do that, turn the middle fan around (on the CPU cooler) so it blows up instead of down, then turn the fan at the top around (on the CPU cooler) so it blows up instead of down and if possible put this fan at the bottom of the cooler instead of the top. You may be able to do this without removing the cooler from the CPU, if not you might as well turn the whole thing 180°.

LOL, you figured it and changed your post whilst I was posting this, advice/explanation still relevant.
Click to expand...

Yeah xD I changed the fans round, and actually changed positions (as referenced by the arrows) so they were positioned well with the intake and outtake fans. Now just listening to the airflow of the case, it sounds so much better.

Idle GPU temps - 35 degrees on all
Idle CPU temps - 30 degrees

EDIT: 10 minutes in and I'm at 40 - 45 - 50, I think I may have made a mistake in the fan positons
EDIT2: No mistake in fan positions (I'm pretty sure), temps have settled at 35, 45 ,55 Going to test load
EDIT3: One of my "Optfans" is spinning at 0 RPM, it could possibly be one of the CPU fans + 62, 92, 99 under Unigine Heaven,
 
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ive seen people getting around this problem with dual gtx480's by buying some pci-e extenders and mounting the graphics cards in some form of custom made cage.

Perhaps a little unconventional though.
 
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