Kan coilwhine uppstå om man klockar? (7970)

Det är coilwhine.
Du överklockade, ditt fel. Det finns inget som täcker detta.
Inget farligt för den delen..

Är väldigt vanligt med coilwhine för 7970, jag fick det även innan jag klockat dem, men bara när jag får extremt hög FPS, som t.ex i menyer i spel, där FPSen kan stiga mot 3-4000 FPS, och alltså inget direkt problem

Vet faktiskt inte vad det beror på, folk brukar ju säga att det handlar om vilka komponenter man har i övrigt också, men vet inte riktigt om jag köper det

En google-sökning bort fann jag detta, skamlöst saxat från anandtech:

Coil whine is mechanical resonance of the coil with the frequency of the signal passing through it. Physically, a coil is just loops of wire, sometimes with a core other than air. If the frequency of the signal is in resonance with the physical wires of the coil, the coil may vibrate. Oft times, the vibration is beyond human hearing (yokes in TV's can do this), other times it's in the range of human hearing.

There are many electrical parts/circuits which can cause whining noises, so don't just assume you are hearing coils. "Annoying buzzing/electrical sound[s]" are unlikely to eminate from a coil - you have something else making noise. Whining is caused by a part (or parts) physically vibrating.

Unto itself, voltage is not going to cause a whining sound. Voltage is electrical potential (actually, EMF); current through a device is dependent on the voltage across it. With a CPU, changing the voltage probably changes the operating frequency of various components within the processor (I really don't know what is changed), however something is probably in resonance with the signal. If you can narrow down the source of the noise, you may be able to reduce or eliminate it. Try using the paper tube from a roll of paper towels to "listen" to various parts of your system to locate the source.

Good luck!