I have been using Cuda since it came out. My problem is last Sept I bought a new video card a 8800 and the fan went out last week. I purchased a new 9800 and now when I run Cuda units my GPU fan is constantly turning on and off. My fear is I will loose another card.

Is this normal? If not how can I disable Cuda?

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Better to set your fan to always ON condition.
Probably you could do this via RivaTuner or via some utility supplied with your card.

BTW, if problem with older card only with fan you should be able to replace it and become happier owner of whole 2 CUDA enabled GPUs instead one now ;)
Try to put some machine oil inside fan (old one, not new one). I do this every few months with all fans in my hosts (CPU, GPU, power supply time to time) and they work many years already and stay pretty quiet.

That's good advice. Oh, XFX is going to warranty the card so I will have two soon. :)

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That's good advice. Oh, XFX is going to warranty the card so I will have two soon. :)

Just fine :)

The fan should come on when the card is actually being used for something, be it Cuda processing or blasting some alien scum.

If it fails, then it was faulty in the first place and should be under warranty.

You are just using it as it was designed to be used.

Keep an eye on the fans as they get older. Like Raistmer said, they can be lubricated or replaced if the bearings start to fail. A siezed fan can cause problems by allowing the GPU to overheat. And some of the fans are a bit cheap, get rattly after a year or 2, and then stick.

Ian

Try to put some machine oil inside fan (old one, not new one). I do this every few months with all fans in my hosts (CPU, GPU, power supply time to time) and they work many years already and stay pretty quiet.

Could you be more specific about this machine oil? It's a light-weight, lubricating oil, yes?

Try to put some machine oil inside fan (old one, not new one). I do this every few months with all fans in my hosts (CPU, GPU, power supply time to time) and they work many years already and stay pretty quiet.

Could you be more specific about this machine oil? It's a light-weight, lubricating oil, yes?

Hm... Actually I use that I have available :)
But probably better to use spindle oil (loom oil).
(Not sure but lubricating oil and loom oil seems pretty the same for me).