Jeg har lige købt mig et XFX 260GTX grafikkort. Så ville jeg prøve at spille COD4 med, da jeg så begynder at spille kommer der en underlig lyd fra kortet, det "spinder" højere og højere jo mere grafisk arbejde der bliver. Skal det gøre sådan? Har aldrig oplevet det før. Det gør samme nummer i BF2.
"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.