Unless its an oversized blower fan like some HIS cards use or the one used on the gtx690, it will get noisy under load unless you control the %. The type and size of fan a blower is as well as the backpressure against the congested rads they usually use, either its a loud enough whoosh or a leafblower type sound. 46%-62% seems to be the best range for most of them, otherwise they get crazy like.
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