Sapphire R9 270X 2GB graphics card - 2nd fan not working at low temps?

dumb_man

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May 18, 2008
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Ive got a gaming PC with a Sapphire R9 270X graphics card for service from a customer.

I fitted the graphics card into a 2nd PC with a new motherboard and the PC boots up properly with it.

The graphics card has two cooling fans of which only the rear fan works at low temperature. The second cooling fan starts working when the temperature exceeds 80 deg C during Furmark GPU stress testing. It also cuts off as soon as the temperature goes below 80 deg C

is this normal behaviour for this graphics card?