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How hot is too hot?

B

Balthazar

n00b
Joined
Jul 29, 2004
Messages
57
Well, I have been playing with my new 6800GT for most of the day and I have run into a pretty serious problem. It started when I was playing in Far Cry, after about 30 minutes I started getting white spots on textures. I figure it was a temp problem and sure enough it was. It was running at about 84C by the time I got out of FC. So I thought I would try the HDR demo and let it run so I could monitor temps. I came to a frightening conclusion that the card is simply heating up and never reaching a plateau. I let it run for about 10 minutes and the card reached 96C and still climbing! The ambient temp in the case was over 70C. I have never had this problem before...my 9700 was nowhere near that hot. I have fans blowing air in and sucking hot air out, but it isn't enough I guess...any suggestions outside of watercooling?
 
Make sure your fan on the vid card is running and that you have your 1st PCI slot open.
 
Yes and Yes. I have thought about a new case...something with better airflow maybe. Any suggestions?
 
Depends on the card IE: The 6800 Asus has a "thermal event" at 135 Celsius and shuts down completely, Albatron has the same at 125 Celsius. There is also a settable threshold where the fan will always run at full speed, usually tripped very early, somewhere around 60 Celsius. and another where the clockspeed will slowdown - that one varies too if enabled.

Supposedly Nvidias design has it going all the way up to 135 Celsius for short periods of time (in the seconds) without permanent damage, its actually written down somewhere (but really hard to find again). Although I wonder how accurate that is, especially considering that no consumer level CPU has dared go above 90.

I would be more concerned about copper/aluminum heatsink warping at higher than boiling point, which will adversely affect cooling in the long term (As anyone with a metal pot can tell you the base will warp pretty quickly if you rapidly heat and cool it)
 
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