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Originally Posted by Black_Dingo
this is so wierd, now you got me all freaked out. I just bought a new card, Radeon X700 Pro and im afraid to try DW now.
My old Geforce Ti4200 was silent.
This may be a dumb question, but are you making sure your fan is clean?
so, whats the current theory?
1. Electromechanical. The sound is produced by friction/vibration of a moving part.
or
2. Electromagnetic. The sound is produced by the emmited radiation of an electronic device. (like the way a transformer hums without moving parts)
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Transformers have moving parts. The laminated core will have vibrating sheets due to the changing magnetic fields. It's like a loudspeaker, but not intentional. This is minimal at low power and with well-made transformers, can be quite loud at high power and with old or badly made transformers.