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Power Supply Squeal survey

D

DarkUltra

Member
Hi!

I am after a new PSU since the two Mist 650W (rev 4.0 and 3.5) squeal when I have high FPS in games or certain loads on the GPU. A survey would show which PSUs are the safest to bet on.

Please post

Motherboard
CPU
Graphics Card
PSU

and which components you can hear squeal under load. Load like ATI Tool, Crysis menu, in-game etc.

I go first:

Gigabyte GA-965P-DS4 rev 1.0
Core 2 Quad Q6700 @3.4ghz
GeForce GTX 285
GeForce GTX 470
Mist 650W Rev 4.0 - Squeals loudly in ATI Tool, Crysis menus, Quake 3
Mist 650W Rev 3.5 - Squeals but hardly able to hear it
 
that squeal is probably just a fan going inside of your psu if you narrowed it down to it. could very well be the ball bearing or sleeve type
 
I hate noise my system is dead silent. And after many reviews on PSU I went with seasonic x gold series 750 watt psu. Its dead silent and the fan only comes on at about 30% load. And even then I can't hear it....
 
daRkKon said:
that squeal is probably just a fan going inside of your psu if you narrowed it down to it. could very well be the ball bearing or sleeve type
Click to expand...
Hi! I'm quite sure it is not the fan, I can stop it with a plastic pin and no change in squealing. It is very distinct, and changes pitch with the FPS I get. ATI tool it varies up and down, and other games it is one pitch for 1000fps, and another for 1800fps (menus in quake 3 and crysis)

Please post more reports 🙂
 
zod96 said:
I hate noise my system is dead silent. And after many reviews on PSU I went with seasonic x gold series 750 watt psu. Its dead silent and the fan only comes on at about 30% load. And even then I can't hear it....
Click to expand...

How about ATI Tool? I'm after a distinct, and annoying squeal. There have been reports of Seasonic X750 squealing. Your XFX 6950 may have a good power regulator then 🙂

Seasonic X750 PSU makes highpitch whine under load
http://www.eggxpert.com/forums/thread/617460.aspx

the gtx 200 and 400 (at least my evga 470) can make some psu squeal
- readouts from an oscilloscope, displaying the interference shooting back up the PCIe power connectors into the PSU.
http://www.bit-tech.net/news/hardware/2009/05/29/msi-solves-the-nvidia-gtx-squealing-problem/1
 
I play BC2 and COD those are pretty intense games and put alot of load on the PSU. I notice no squeal at all coming from the PSU while gaming...
 
Get some silicone sealant , small tube is all you need and put a bead on each of the coils in the supply, don't cover the entire coil with it (keeps coils from getting air that may aid in cooling them), and it will stop. Send high frequency power through a coil of wire wrapped around something and it will vibrate making the noise. The more current the louder it gets.
 
zod96
Can you test ATI Tool too? thank you

Modelworks
Oh no i'd rather keep my PSU warranty in order.

Jeff7
how interesting 🙂 what program did you use to create it?

Please write more reports.
 
I always thought that kind of squeal was due to cheap,weak or failing capacitors, never heard of the coils audibly vibrating. I had a cheap 600 Watt PS that would do that with my old ATI X1950XT under full load.
 
My Corsair TX650 squealed like a stuck pig in some video games when I put in a GTX 460. It was quite loud and very annoying. Thankfully, flashing the BIOS fixed it.
 
Tsavo said:
My Corsair TX650 squealed like a stuck pig in some video games when I put in a GTX 460. It was quite loud and very annoying. Thankfully, flashing the BIOS fixed it.
Click to expand...

Please elaborate.

My Antec TP-550 New sounds like it is getting murdered by my GTX 460 when running F@H. Isn't this basically the same as the Corsair TX? They're both Seasonics, right?

Antec replaced it without any fuss, but the new one squeals too.
 
drizek said:
Please elaborate.

My Antec TP-550 New sounds like it is getting murdered by my GTX 460 when running F@H.
Click to expand...

Flashing my mainboard BIOS fixed the issue, which is a good thing because I was about to beat both my PSU and GPU into the pavement with a hammer.

My TX is a Seasonic. The New TX 650's are CWT junk. No clue about your Antec unit since Antec is just another way to spell garbage.
 
Last edited:
CoolRunnings said:
How do you tell if it's CWT or Seasonic without voiding the warranty?
Click to expand...

http://www.realhardtechx.com/index_archivos/Page447.htm

As a start.

Interesting that the 650TX-C (CWT) isn't listed on Newegg, and there's a new 650TX-V2 listed which is reported at being a Seasonic unit.

I wonder if Newegg got the part number wrong or stopped selling it, or if Corsair dropped the C designation from the CWT unit or just stopped making it.
 
zod96 said:
I hate noise my system is dead silent. And after many reviews on PSU I went with seasonic x gold series 750 watt psu. Its dead silent and the fan only comes on at about 30% load. And even then I can't hear it....
Click to expand...

How did you "silence" a 6870?
 
I might go for a Corsair AX850W, seems to be quieter than the TX850W and HX850W


- however it was inaudible in this test and throughout testing for the most part. If anything, there was just a slight bit of noise at full load that was noticeable once the unit had been shut off.
http://www.hardocp.com/article/2010/10/07/corsair_ax850_850w_power_supply_review/6
(ax859w)

- once the unit entered the Torture Test it clearly became audible as the unit seemed to start whining just like a high speed spooling sound occurs with turbines. This sound only served to increase when the unit moved into the full power test. However, in all loads below 80% this sound was absent and the unit was unremarkable in our test background.
http://www.hardocp.com/article/2009/05/27/corsair_hx850w_power_supply/6
(hx850w, Could this be coil/capacitor whine? Or was it just a bad fan?)

There are several threads at corsair forums about their psu and electrical noise issues
http://forum.corsair.com/v3/showthread.php?p=501242
http://forum.corsair.com/v3/showthread.php?t=85166
 
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