Are lower tiered power supplies the reason for coil whine?

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nash984

Honorable
Nov 15, 2012
22
0
10,510
Hi,
Actually am using a Thermaltake smart se 730w semi modular psu. i first had coil whine with my powercolor HD 7770. today i obtained my new asus gtx 970 strix, and while playing assassin's creed unity, i noticed the coil whine is still present. can bad components of a power supply cause this? or its normal for a GPU to have coil whines. I read it somewhere that coil whines occurred due to the PSU not able to supply enough power to the GPU. is that true? and i will receive my new Seasonic S12ii 620w (found in tier 2 of the PSU list) tomorrow and i hope the coil whine will be gone.
 
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M
Coil whine is usually prevented by manufacturers anticipating it and applying gobs of a glue-like substance to the main coils in the PSU. With either of your setups (past / current) you won't be using 730W of power, and thus aren't straining the PSU. Coil whine is a combination of power draw as well as oscillation of the coil. If you're hearing it, the coil is either poorly secured, or poorly damped. The coil becomes an incorrect diameter from not being secure, and vibrates. Some people have heard similar noise in capacitors. Because I mentioned it, wattage is also not what's used to determine what PSU you need, but your new PSU is appropriate.
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Rowdyrauderson

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Dec 14, 2012
68
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10,660
Coil whine comes from a component being taxed. If your power supply is running at 100%+ it would "whine". Same thing if the video card is pushed. Especially if you are overclocking them. A better power supply is always going to be of benefit, but if your card has coil whine and is adequately powered by your old supply, it will have coil whine with the new power supply.
 
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MasterMace

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Oct 12, 2010
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Coil whine is usually prevented by manufacturers anticipating it and applying gobs of a glue-like substance to the main coils in the PSU. With either of your setups (past / current) you won't be using 730W of power, and thus aren't straining the PSU. Coil whine is a combination of power draw as well as oscillation of the coil. If you're hearing it, the coil is either poorly secured, or poorly damped. The coil becomes an incorrect diameter from not being secure, and vibrates. Some people have heard similar noise in capacitors. Because I mentioned it, wattage is also not what's used to determine what PSU you need, but your new PSU is appropriate.
 
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