Seems strange two cards exhibiting the same thing. I've not experienced anything like that with my Gaming OC and notice no discernible coil whine.
Is the NR200P Max V2 a recent purchase? Could potentially be the PSU as I've seen quite a few reports of the CM850 suffering from quite severe coil whine under load. Could try and create a DIY 'stethoscope' out of some rolled out card or rubber hose to try and pinpoint where the whine is originating. Or try the card in another PC if that's an option.
Is the NR200P Max V2 a recent purchase? Could potentially be the PSU as I've seen quite a few reports of the CM850 suffering from quite severe coil whine under load. Could try and create a DIY 'stethoscope' out of some rolled out card or rubber hose to try and pinpoint where the whine is originating. Or try the card in another PC if that's an option.
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