I have a machine with 3 HD5870's in, and one of them shows a much higher temperature than the others.
All 3 cards work fine, but inspection reveals that one of the cards has a 'stiff' fan that in use doesn't even rotate.
That would be the reason for the running hot then.
The performance of the hot one is apparently a bit lower than the other cards, especially once hot, and I surmise that it throttles back as
its temperature limit is reached, and that that is what has saved the card from a hot death, in fact.
Its midwinter now, and cold where these are running , so it may not be too bad. But I'd like to get this fixed.
Seems like a new fan is whats needed.
Anyone know anyone who can provide this service? Or is it not possible to do this and should I just let the card continue to fry ?