Question 5700XT undervolt strange noises

qwaszxman

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I have testing some undervolt settings on my 5700XT.

when i go below a certain threshold i start to hear a strange contast beeping sound coming from the graphics cards. its like a constant low beeping sound coming from the card and happenings many times per second, Its not that loud but loud enough that i can hear it clearly if i unplug the extra exaust fans i have connected to the rig.

The rig still runs stable like this ( 100% share rate over 8 hours ).

I'm not sure if this is causing any damage to the cards. Does anyone know? For now i have raised the voltage back up enough so that the noise no longer occurs.
 
This is noise from PWM/switching regulator, some choke is resonating and making that sound. A choke is a type of 'transformer'...
 
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