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Buzzing sound from PSU


New Member
Oct 30, 2008
18 (0.01/day)
Hi, bad luck seems to be following me everywhere.
I just sent my "high-pitched sound emiting" Thermaltake TR 550W to RMA.

I just bought a brand new Xigmatek NRP-MC651 650W PSU. This was yesterday. Everything works really well, it only gets slightly warm.
But then I wanted to listen to it to see if anything strange is with this one.

I'm hearing a faint buzzing sound. It's not continuous or intermittent, it just occurs at short random intervals. This occurs when computer is powered on and when it's powered off, but does not occur when PSU is powered off via rocker switch.

The sound is very faint, I can only hear it relatively well when I stick my ear on the back PSU grill, but this still worries me.

I seriously don't want to RMA... The Thermaltake unit is said to take 2 weeks to fix, I don't think I'm going to handle two weeks as I have a lot of work to do on the computer.

This particular PSU comes with an array of protections : OVP / OCP / OPP / UVP / SCP / OTP is 80+ and all reviews are fantastic... Also the MTBF is a minimum of 120.000 hours.
Will this strange sound wreak havoc on my life or not ?


Staff member
Oct 6, 2004
46,203 (9.52/day)
System Name Daddy Long Legs
Processor Ryzen R7 1700, 3.9GHz 1.375v
Motherboard MSI X370 Gaming PRO carbon
Cooling Fractal Celsius S24 (Silent fans, meh pump)
Memory 16GB 2133 generic @ 2800
Video Card(s) MSI GTX 1080 Gaming X (BIOS modded to Gaming Z - faster and solved black screen bugs!)
Storage 1TB Intel SSD Pro 6000p (60TB USB3 storage)
Display(s) Samsung 4K 40" HDTV (UA40KU6000WXXY) / 27" Qnix 2K 110Hz
Case Fractal Design R5. So much room, so quiet...
Audio Device(s) Pioneer VSX-519V + Yamaha YHT-270 / sennheiser HD595/518 + Corsair Void RGB
Power Supply Corsair HX 750i (Platinum, fan off til 300W)
Mouse Logitech G403 + KKmoon desk-sized mousepad
Keyboard Corsair K65 Rapidfire
Software Windows 10 pro x64 (all systems)
Benchmark Scores Laptops: i7-4510U + 840M 2GB (touchscreen) 275GB SSD + 16GB i7-2630QM + GT 540M + 8GB
personally, i always return/RMA noisy/whiney PSU's, just out of fear of them dying and taking my PC with it.

The noise is called capacitor whine, *usually* its a sign of a bad PSU. A new Xigmatek should NOT be making noises, in my opinion.


New Member
Oct 30, 2008
18 (0.01/day)
The strange this is that this sound is a lot less noticeable when the system is under load ... It's loudest when the computer is turned off.


Knows what makes you tick
Jan 24, 2006
9,371 (2.14/day)
System Name Budget Gaming
Processor AMD FX6300
Motherboard Gigabyte 880GMA-USB3
Cooling Coolermaster Hyper 212+
Memory 8GB Ripjaws DDR3 1600
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Storage 1TB Sata2
Display(s) Acer 24" LED
Case Generic black
Audio Device(s) Stock onboard
Power Supply FSP Aurum Gold 650W
Software Windows 7 Home Premium 64bit
I agree with mussles. It can probably wait as I let my Antec Smart Power 500 go for about a month with VERY whiny caps.