Power Supply Makes a Buzzing Noise on Load?

[Twisted4000]

I don't know how long it's been doing this, but just recently I noticed my power supply emits sort of a buzzing noise when I game, when the graphics happen (like clockwork, for example, when I play StarCraft II, when I'm on the animated menu, it buzzes. But as soon as a loading screen appears, the buzzing stops. And then when it's done loading and the game begins and the graphics are present, the buzzing begins again). I don't know if it sounds more like a vibrating noise, or a static-like noise, I'm not really sure what it is but it could be either or. It is a Corsair CX Series CX750M 750w. Any ideas or if this is cause of concern at all? Thanks.

OS - Windows 7 Ultimate 64-bit
Chassis - CoolerMaster MasterCase MC500
Motherboard - Asus Maximus VI Hero
Processor - Intel i7 4771 @ 3.5GHz (Quad-Core)
Memory - 32GB DDR3 @ 1600MHz
Video - NVIDIA GeForce RTX 2060 Super
Storage - 1x OCZ 128GB SSD (OS Installed), 1x WD 500GB SSD, 2x Seagate SATA 1TB HDD @ 7,200rpm, 2.628 TB Total
Power Supply - Corsair CX Series CX750M 750w
WiFi - Intel Dual Band 7265 802.11ac
Heatsink - Cooler Master Hyper 212 EVO w/ Pull Fan

 

[Mr.Scott]

Coil whine.
How old is it?

 

[Twisted4000]

Coil whine.
How old is it?

I've had it for about 4-5 years... I'm assuming it's just time to get a new one?

 

[Mr.Scott]

If it's out of warranty, you might as well.

 

[EarthDog]

Yeah.. not much you can do about it. Grab a new one and use that as a known good reserve.

 

[UltraTaco]

If I may also with a questn...when overclocking harder, I run cinebench r20 and hear a pump starting to slow down when bench begins and then computer turns off.

X58 era system retrofitted with hexa xeon.
750w psi
Asus p6t del v1
Gtx460
3 hard drives(2hdd, 1ssd)
LEDs
Single fan AIO

The slow dwn is not like brrrr....d, but you hear a tone change when benchmark starts crunching. I'm also getting almost limited on temps as well at that point.

Do I need 1000watt psi? Or is it more motherboard limited?
(do I need new computer?)

 

[Mr.Scott]

With a single 120 AIO, I would bet your temp is the problem.

 

[UltraTaco]

Oh yeah, it pegs the limit during stressing way before voltage becomes a problem, but on short benches I like to pump a little extra and then power goes poff, and like someone pulled the plug. Usually 4.4ghz or 1.49vcore, whichever comes first. Fans start to dim and couple seconds later it happens.

 

[Twisted4000]

Got a new PSU (Corsair CX650) and the noise is gone.

 

[UltraTaco]