Question about ATI  Radeon X1900

I have the ATI Radeon X1900 (512mb) and the fan on the card runs consistently... as in never stops unless the machine is asleep or off.
Is this normal behavior for this card?
I have a MacPro 8Core and a 30" Cinema Display.
I appreciate any insight.
MacPro   Mac OS X (10.4.9)   30" Cinema Display

Yes, it's audible although how much depends on your environment and hearing. Like you I wish mine were quieter but I'm used to it now.

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    When I write, I often find that I end posts with what I wanted to say. Put summary at top helps.
    What I'm trying to find out:
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    I don't know. I do know some X1900s are being replaced even if out of warranty, as are 2600s also.
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