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Thread: How do you stop a PSU from squealing under load?

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    Default How do you stop a PSU from squealing under load?

    I thought only old PSUs with aging caps would squeal under load. But, I have a good friend who is having continuous issues with squealing PSUs. He has gone through 1 HX620 and 3 AX750s, all squeal under load. I recently built a rig for someone else with a Seasonic X750 that squealed under load testing. Is voiding the warranty and gluing the caps the only way to stop a brand new Seasonic based PSU from squealing? What are we doing wrong here? My personal rig's CM SP-M700 doesn't squeal at all, not even a little.
    PSU: Rosewill FORTRESS-650 || Mobo: MSI Z97M-G43
    CPU: Intel i7-4770K || Corsair H60 (New Version)
    RAM: 8GB G. Skill Ripjaws 2133MHz @11-11-11-30-2T || SSD: Intel 530 240GB
    HDDs: 1TB WD Black, 2x 2TB Hitachi || GPU: AMD Radeon HD7870 @ 1150/1400

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    Is he positive that it's PSU and not, say, chokes on video card?

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    its not just caps...its also coil whine, along with other things

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    its usually caused by electric resonance between components on the video card or mobo and the psu.

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    Quote Originally Posted by rafal_iB_PL View Post
    Is he positive that it's PSU and not, say, chokes on video card?
    2x

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    Yea, odd that 4 PSU's on the same rig squeal. I agree with looking at the video card.

    Also, it it just at load testing or all the time? Most load tests put more pressure than heavy use will.

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    threaten to turn it into bacon?
    "There is no way you can be Harvard Monday through Friday, and try to be Alabama on Saturday" -Art Guepe former University of Virginia head football coach

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    He's been through 3 or 4 graphics cards as well trying to get rid of the issue. He finally put the PSU outside of the case and was able to isolate the sound. It is 100%, definitely coming from the PSU. Also, if he puts the PSU next to his ear, the squeal is louder with the fan side exposed to his ear (whereas the casing side is much quieter).
    PSU: Rosewill FORTRESS-650 || Mobo: MSI Z97M-G43
    CPU: Intel i7-4770K || Corsair H60 (New Version)
    RAM: 8GB G. Skill Ripjaws 2133MHz @11-11-11-30-2T || SSD: Intel 530 240GB
    HDDs: 1TB WD Black, 2x 2TB Hitachi || GPU: AMD Radeon HD7870 @ 1150/1400

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    um, duh, theres no metal blocking the sound

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