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8800GT Sli Cooling Problems

Tags:
  • Nvidia
  • Zalman
  • Cooling
  • SLI
  • Graphics
Last response: in Graphics & Displays
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October 24, 2008 7:47:29 AM

Hey guys,
Ive recently bought another 8800GT to SLi with my current one. My current one used to run at 80C until i put a Zalman VF900 on it, and then it didnt run past 40C on load! However, ever since I put another card in, its been getting extremly hot. So hot that my system shuts itself down as its getting too hot, even with the side of the case off. The copper on the Zalman is getting red hot. It shuts itself down when im playing Crysis on "Very High" settings (which it does very well until it dies ¬.¬) and when on a lower setting it runs fine, just very hot.
Anyone got any ideas how to stop it getting so hot it shuts down? ive considered water cooling but im on a budget at the moment.

Many Thanks!

More about : 8800gt sli cooling problems

October 24, 2008 11:17:34 AM

The Zalman cooler blows the hot air back into the case as does the other 8800GT. This increases the temps in the case which in turn increases the temps of the card. Its a vicious cycle.

Luckily the solution is normally quite simple. Better airflow. Get the hot air out quicker.
October 24, 2008 12:37:25 PM

Well ive opened up the side of the case to no avail. the graphics may keep for an extra few minutes
I may get a desk fan then until i can afford water cooling.
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October 24, 2008 12:38:15 PM

Yeah a case with better airflow would help, an aftermarket cooler that blows hot air out of the case would be even better. I suppose you could also up the fan speed on those cards to see if that helps. Nvidia cards tend to have their fans set low by default, around 33% or something like that. Upping the fanspeed to 70% or above should help cut temps.

Also you could try wiring your case better, clamping everything out of the way of your front fan (you do have a front fan?) so that airflow isn't impeded. It's good to have a nice clear channel from front to back. After rewiring my case, which was a pain, I noticed 15C drops in temps on my gpu and slightly less on my cpu. It's worth the hassle and it costs you nothing but time.
October 24, 2008 1:01:39 PM

Use Rivatuner to set the fan speed.
Remove the dust.
October 24, 2008 1:13:39 PM

The side of the panel will only help a little bit and not nearly as much as a closed case with strong (and silent) fans in the correct places. I have 3 intake fans and 1 exhaust fan(and 2 4870 blowing air out), all 80CFM. Works wonders however removing actually increases my temps. Not enough movement. My 4870s hardly ever go over 65C with a 20% fan bump, not bad considering my room hits up to 30C at the moment.

PS, yeah the cabling thing helps... I should apply it sometime through.
!