Buzzing Noise from power supplies - Possible solution

[Ajcfernandes]

I have the same problem on my tx650w i turned vsync on disable C1E and i still have noise coming from my psu on games and ati tool, on game is lower noise but in ati tool is very loud, i think this is becoming usual problem among corsair psu owners so something must be done to solve it, and we all know that rma is not the solution because new psu make same noise, so if there is some incompatibility between PSU, Video card or Motherboard corsair must post an compatibility list for psu or try to solve this issue with an psu review, thats my opinion about this.

PS: Anyone can tell me if this noise means any harm for the psu or the rest of the components?

[rrt0000]

I bought a HX620 to REPLACE a loud powersupply (from another company) that I'm RMAing. This buzz is even worse on HX620.

I'm able to fix via disabling c1e c3/c6/c7 but I want to use c3/c6/c7 as with this disabled Intel turbo boost does not work on my i7 860.

2nd issue I'm having is that my HX620 goes WHACK if I plug in my sound card (Xonar DX).

I don't want to waste my money in shipping RMA'ing power supplies all the time. Is there any power supply from corsair that is guaranteed to work properly (read: c1e enabled, c3/c6/c7 enabled)?

[idx]

disabling C1E and EIST would result in the cpu working full load
at idle and raising temp above 60 c in hot climates so what kind
of solution is this ??? i say your cpu will worn out in few months
i see its strange the forums admins got this thread to be a sticky

i have core 2 duo and corsair psu and i havnt got any kind of noises

[Wired]

Ram Guy stickied it last February.

[idx]

i have no intend to question ram guy openion or any other experts here
as i know nothing about computing but it just sound strange to tell
people to stop their dual or quad cores cpus from throttling down
at idle specially without the proper cooling i think this is a big load
to put on the cpus .. but i dont really know . if you feel my openion
is misleading users here i can just edit it or you delete it .. sorry for bother

[hotzge]

Solution for everbody:

First of all I would like to say sorry for my english. I'm not a native speaker.

The only opportunity to SOLVE the wineing problem without having some drawbacks (C1E off, VSync on) is to open the PSU and to improve the coils:

Spray with a isulating varnish for elektronical use (acrylic) on all coils. Here in germany the most comment isulating varnish is called "PLASTIK 70".

Here are some simulars: http://www.alibaba.com/product/tr107...varnishes.html

If there are heat shrink tubes covering the coils just dismount them and replace them afterwards.

This procedure stops the wineing in 99% of all cases. Although there is no danger to your PSU treating it in that way, you will lose your guaranty (because you have to remove the seal). So take this under considuration!

Greetings

Holger

[idx]

i have the corsair psu and C1E is enabled and i have an E8500 i dont have
this issue at all .. it must be some of the units doing this not all
but i dunno if the os has anything to do with this as i am still using xp

[Wired]

Originally Posted by hotzge

Solution for everbody:

First of all I would like to say sorry for my english. I'm not a native speaker.

The only opportunity to SOLVE the wineing problem without having some drawbacks (C1E off, VSync on) is to open the PSU and to improve the coils:

Spray with a isulating varnish for elektronical use (acrylic) on all coils. Here in germany the most comment isulating varnish is called "PLASTIK 70".

Here are some simulars: http://www.alibaba.com/product/tr107...varnishes.html

If there are heat shrink tubes covering the coils just dismount them and replace them afterwards.

This procedure stops the wineing in 99% of all cases. Although there is no danger to your PSU treating it in that way, you will lose your guaranty (because you have to remove the seal). So take this under considuration!

Greetings

Holger

There's always danger in opening a PSU, especially for those that aren't familiar with capacitors. Like he said THIS WILL VOID YOUR WARRANTY!

[idx]

i did some reading on this issue because it really makes one curious ..
some say its the mb some say its the cpu i even read that its an os issue
and that windows 7 users are not having this problem at all . that is if we
consider it to be a problem . as i dont see any system malfunctions
resulting from it ..
i mean GTR racing cars makes lots of noise but that dosnt mean these is
something wrong with the machine ..

i dont have this noise and i wouldnt want it to happen to my system
so i can understand why the posters in this thread are concerned
about it ..

but what i didnt find is an accurate and informed analyzation of this
issues from the experts in this forum considering that this problem
seems to effect the products of corsair company and even causing
costly and unnecessary RMA"s to non faulty unites ...

i read through this thread and members are talking all kind of things based
on their limited searches and information's (google and so )
but we all like to see a real reply from the experts and admins of corsair
company or forum with a proper scientific degree ...

most properly corsair fixed this issue cause i bought my unit few month's ago
and there is no sign of this so called buzz or vibrations

so up to date you guys figured some remedies to your machines witch did
not necessarily worked with other members machines

but did any of you know why its happening ? i mean for a fact. not just speculations
like this :

Originally Posted by Tbwotw

It seems that the problem was comming from the 'powersaving' systems use by Intel processors. Something seems to be wrong when they are activated in the bios ( a kind of incompatibility between MB-CPU-Graphic-Power working together).

with all do respect that all not correct and not based of science .
take care that we are countering high quality Advanced Technologies functions
that were made by scientists .either we are talking about intel
Enhanced Halt State (C1E) Technology or about the best power supply
out there in the market which is corsair .
its a case of sensitivity here you cant solve it at google , you know what i am
talking about guys ?
you cant solve such problems by disabling Technologys that you have paid for
and RMAS
you solve by simply knowing why its happening and more simply fix the
real reason not by deleting devices .

i feel needless to talk about this after one of the members expressed all what
i mean in a great reply :

Originally Posted by ManMountain

What if a customer has their PC on 24/7 and actually wants to use these power features on their motherboard? What advice does Corsair have?

My Corsair PSU is emitting an electrical "buzz" when using advanced power management, it is not functioning as a PSU should. I purchased this PSU to ensure ample power is available to components when required and that power is efficiently used when not needed.

I want to use C1E, C3/C6/C7 and EIST to minimise power usage when idle. What options do I have? I do not want to RMA this PSU only to be given an identical model which exhibits the exact same fault.

yes sir ,, thank you , we all want to use our hardware properly and benefit
from its Advanced enchantments that people worked hard to invent them
we dont want to delete them we want to fix them
and that can only be done if we knew why and what causing this issue .

so we dont talk what we dont know now . we wait a scientific explanation from
the people in charge or we just pass on it in silence .

[Wired]

idx, how did you write that post? The formatting's all messed up.

[idx]

well if you mean the language English is not my first language and i did not
learn it at school also my computer knowledge is limited

but what i know that there is no spelling mistakes cause am using the corrector
i am sorry for composing wrong sentences is that what you mean

but i think i have expressed the general meaning of that post if u would
kindly direct me on what part you didnt understand so i can lern from my mistakes

[Wired]

No, I mean your sentences are being manually cut in half. The forum's not doing it. Are you creating your posts outside of the forum like in notepad or something, and then you're copying them into a post? Look at this post for example. It's flowing across the post and automatically being transitioned to the next line regardless of the window size.

Your english is fine, although 2 tips: "i" by itself is capitalized, and sentences start with caps as well.

Also, unless it was just a typo, lern has an a, learn.

[idx]

yes thats my bad am sorry . i did not calculate the line space correctly
also i dont remember to add all the punctuations and capitals but would
like to improve . i always play word games like crossword ex lol to improve
my spelling . i actually wouldnt be able to write anything without the browser
corrector .

edited : well this time i did reach the end of the line so i dunno why its cut on half lol like this is my end of the line ============================>

so i dunno why its not the end of the line on the page.

am using xp pro sp2 and fire fox

[mtakala]

Thank you very much for this topic. While disabling C1E and SpeedStep didn't totally mitigate the issue for me, it is very much reduced and cannot be heard anymore from about 1m away.

The whine when in 3D modes still remains - but I can certainly live with that, as the graphics card (HD4870) has so noisy fan. I also use Ati Tray Tools to set the card fan to 100% when in 3D modes, and the noise of the fan covers the issue with the PSU.

[cmdrdredd]

Originally Posted by idx

disabling C1E and EIST would result in the cpu working full load
at idle and raising temp above 60 c in hot climates so what kind
of solution is this ??? i say your cpu will worn out in few months
i see its strange the forums admins got this thread to be a sticky

i have core 2 duo and corsair psu and i havnt got any kind of noises

Wrong, and wrong again. Turning off these features in your motherboard BIOS will only prevent the system from lowering the voltage and multiplier of your CPU dynamically. Meaning it will always be at it's highest clock frequency whether you overclocked or not. For example I can run my Q9550 at 448Mhz FSB and 8.5x multiplier for 3.8Ghz at 1.4v. If I turn on C1E and Speedstep it will reduce the voltage to 1.3v and the multiplier to 6x and give me a clock speed of 2.68Ghz until I use the CPU and the voltage and clock speed both ramp up accordingly.. I turn these features off, run my PC almost 24/7 and I have no problems. Why? Because your CPU only runs at load and gets hot when you are running games and apps that use the CPU. Idle at desktop will not be 60deg unless you have very poor ventillation and cooling I'm talking worse than stock.

The reason this helps mitigate the buzz or whine you hear is because the motherboard does not have to keep calling the PSU's 12v connector for more voltage to the CPU and then less, then more, then less. It is creating a workload there constantly. So when you play a game the motherboard asks for more voltage and changes the clock speed. Then when you turn off that game it tells the PSU to give less voltage to the CPU.