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8800GT @ 110C IDLE hot?!

Forum Graphic & Displays : Nvidia - 8800GT @ 110C IDLE hot?!

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ralphgrant   07-28-2008 at 12:53:22 PM

Got a Gigabyte Geforce 8800GT 512mb (GV-NX88T512HP b-version). The card comes with a zalman heatpipe cooler. At idle, the GPU temp is around 95C if the chassi is open, if I close it it goes up to 105C. Haven't really been running the comp for very long so far with the chase closed.

It seems quite hot, or what do you think?

Any advice to replace the coolr to get the temp down?

Also, I did some modifications to the cooler. I grinded down the end of the two heatpipes (took of top 7mm) on the top of the graphics card. This was because they were sticking out to far so that I could not close the chassi. A bit worried that the pipes are not "sealed" anymore, not sure if the contain some liquid or if this affects the performance.

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dtq   07-28-2008 at 01:05:30 PM
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Those temperatures are dangerously high for idle, I would guess youve damaged the cooler there. I havent played around with heat pipes to know what effect things have. As far as I know they dont contain liquid but are essential to the cooling process. I would say that the heatpipes are the prime suspect for such high temperatures, I would guess that gaming like that may be enough to cause damage to the card.

I really dont know enough about after market coolers to know which ones are smaller than the one you have and so will fit without butchery.

Reply to dtq
Kari   07-28-2008 at 01:06:58 PM
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yep, they did contain fluid/vapour but now they don't anymore. That liquid is used to transfer the heat inside the pipes from the chip to the fins of the heatsink, and thus the performance is severely degraded if the liquid leaks out from the pipes...

http://en.wikipedia.org/wiki/Heat_pipe
http://en.wikipedia.org/wiki/Image [...] hanism.png


Message edited by Kari on 07-28-2008 at 01:09:24 PM
Reply to Kari
outlw6669   07-28-2008 at 01:28:55 PM
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ralphgrant wrote :

Also, I did some modifications to the cooler. I grinded down the end of the two heatpipes (took of top 7mm) on the top of the graphics card. This was because they were sticking out to far so that I could not close the chassi. A bit worried that the pipes are not "sealed" anymore, not sure if the contain some liquid or if this affects the performance.



http://www.terminally-incoherent.com/img/facepalm.jpeg

Sorry, you just killed your warranty.
I was going to recommend RMAing it, but now you are kinda screwed.
The only thing you can do is stop using it until you purchase a new cooler for it!
Extended usage at these temps will kill it.
Get a new aftermarket cooler.

------------------------------ If the automobile had followed the same development cycle as the computer, a Rolls-Royce today would cost $100, get a million miles to the gallon, and explode once a year, killing everyone inside.
PSA
 Reply to outlw6669
spanner_razor   07-28-2008 at 01:41:41 PM
- 0 +

Your case must be tiny if it can't fit in that card vertically. My advice in future would be to get a bigger case than to fiddle with the cooler.

Reply to spanner_razor
strangestranger   07-28-2008 at 01:42:36 PM
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this thread's great on so many levels.

------------------------------ I'm a git, deal with it.

Antec 1200,PC Power & Cooling 750,Gigabyte DS4-x48,Intel Q9550@3.4 W/Xigmatek S1283,8GB OCZ DDR2 800,ATI 4870X2,X-FI>CA 640C amp>Tannoy R300/Senn 595's
 Reply to strangestranger
spuddyt   07-28-2008 at 01:54:42 PM
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not for the OP to find out he's ruined it..... (pity over) HA HA HA :p

Reply to spuddyt
ralphgrant   07-28-2008 at 01:56:23 PM
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It's not a tiny case, it's a origen s14v. however i do not have more than 5mm of clearance "above" the card (ie, above the direction the sli connector is pointing and back is were you connect the dvi).

Ane clue what aftermarket cooler to get, that does not stick out on top of the card (like the two end of the heatpipes)? The cooler can not go out further than the sli connnector....

Reply to ralphgrant
outlw6669   07-28-2008 at 02:00:05 PM
- 0 +

I would recomend This cooler and sliding the SLI bridge through the cooler rather than cutting it.
Again DO NOT USE YOUR CARD untill you have replaced the cooler.
Doing so will cause it to fail with no warranty!

------------------------------ If the automobile had followed the same development cycle as the computer, a Rolls-Royce today would cost $100, get a million miles to the gallon, and explode once a year, killing everyone inside.
PSA
 Reply to outlw6669
Bronze Graphics badge jaguarskx   07-28-2008 at 02:18:12 PM
- 0 +

Wow 110c... that could easily fry an egg.

You should have simply RMA'ed your card. Do not use the card until you attach a new heatsink.

------------------------------ Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP

Peace on Earth by means of the destruction of all life on Earth.
 Reply to jaguarskx
rubix_1011   07-28-2008 at 02:53:48 PM
- 0 +

Maybe you should have asked forum residents before you cut...not after.

------------------------------ The Pastafarian belief of heaven stresses that it contains beer volcanoes and a stripper factory. Hell is oddly similar, except that the beer is stale, and the strippers have VD
 Reply to rubix_1011
ralphgrant   07-28-2008 at 03:04:09 PM
- 0 +

Here is some feedback on my accidental 8800GT temperature experients, in case you don't want to test it yourself:

GPU was not FUBAR from running at about 95C average temp for 10 hours. Very stable, no problems. Heatsink was very cold during operations, but impossible to hold your finger against the back of the graphics card. When running some nivida demos the temp would go up to 105C in about 30 sec, before shutting down the demo. When putting on the case lid the temperature would rise to about 105-110C in 2-3 minutes before I took it off again.

De-clocked the card somewath in Nvidia HUD and also put a miele vaccum cleaner on top of the graphics card (S 4211, maximum effect 2000 watt, third highest speed), this would take down the temp to 85C. However extremly noisy (2000 watt!).

(i'll pick up a new cooler today, I'll bring the ruined one and measure clearence)


Message edited by ralphgrant on 07-28-2008 at 03:08:08 PM
Reply to ralphgrant
alphadan   08-10-2008 at 04:44:02 PM
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lol dude what have u done cuting a head pipe, its likr cut one of ur members and then expect that everything will be ok.

Reply to alphadan
broketechjunkie   08-16-2008 at 07:08:31 AM
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OMG, I hope you can get a good cooler... outlw6669 recommended a good cooler.

Reply to broketechjunkie
Bronze Graphics badge cjl   08-16-2008 at 07:27:38 AM
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Heatpipes work through a combination evaporation and condensation method that absolutely requires them to have the liquid inside. Without the liquid, the thermal conductivity is reduced by something like a factor of a thousand.

Reply to cjl
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