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Old 30-01-19, 07:54 AM
tgrech tgrech is online now
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Join Date: Jun 2013
Location: UK
Posts: 1,450
Make sure everything is 4-pins, the GPU fan header should be a teeny tiny JIT 4-pin connector, the adapter should have 4 wires, as well as the fan you connect to it. Presumably you're testing this with a full sized fan? Is the fan at 100% speed constantly when connected? If you have an oscilloscope at hand maybe try reading the tachometer line? (A multimeter should give a basic indication if the values flick around)?

My GPU has an aftermarket cooler too, though it was a 2-pin model with no tach or PWM lines, controlled via voltage, have you checked your cooler will be a full 4 pin as well?.
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