I think I have a PSU voltage problem..please check the screenshot :)

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ramy_chaos

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Oct 13, 2010
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Hey there! First off, here are my specs:

i5-4670k @3.4ghz
8gb corsair vengeance pc3-12800
evga gtx 760 w/acx cooler
gigabyte z87x-ud4h
Corsair CX500M PSU
1tb Seagate barracude 7200rpm

Bought this pc mid december 2013

Now for the problem! I've got crackling sound whenever the GPU is under load..say im playing GW2 and listening to music, therell be constant crackling. I've already been issued an RMA ticket by EVGA because i think the problem is in the GPU (as im using a hdmi cable from gpu to monitor with speakers). However, I'm looking at the power readings, and I think theyre off. Could someone please verify this for me? The screenshot data is from playing GW2 and watching Naruto in MPC. Thanks! Please feel free to ask for more info if needed :) I don't have crackling when im using the processor's 4600 gpu or when im using the onboard sound card.

http://imgur.com/3qcaUQM
 
Solution
ko888
I don't think HWiNFO64 is up-to-date enough to report proper voltages for Z87 chipset motherboards. I've tried it on an ASUS Z87-PRO and it didn't show the right voltages.

Use the utility that came with your motherboard (i.e. GIGABYTE's APP Center - EasyTune's Hardware Monitor).
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Ludamister

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Feb 19, 2014
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I'd like to say that your PSU is simply too low. You should consider upgrading it to 750W with a gold or silver efficiency. If you plan on doing SLI, perhaps an 850W for overhead and potential GPU upgrades, overclocking and the such.

How long have you had that PSU? It's possible that the capacitors' performance has simply degraded.
 
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enemy1g

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Oct 3, 2013
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While the CX line isn't the best, it provides 38A to a 12V rail, and the 760 only requires 30A, so you should be fine with your current PSU.

The only time I've actually used a monitor's speakers was with an Xbox 360, and it wasn't great. So having a separate set of speakers ($30 Logitech ones sounds great for the price) would likely remedy the problem.

But to be certain, there is no performance issues when the problem occurs?
 
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ramy_chaos

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Oct 13, 2010
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what do u mean performance issues? I get sound crackle but only when using the GPU's hdmi output. if i use the intel 4600 card thru the mobo to the same monitor then no crackle ever. Nor do i get it with the realtek onboard sound card. I've already been given an RMA ticket by EVGA but I'm worried that I get the new GPU and the problem still isnt solved. Are the readings in the screenshot normal? I'm not an expert but i figured the -12v's reading should be near to that number, and the same for the 3.3v rail? I'm not really sure how to read the psu readings.
 
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toyftw

toyftw

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Jul 29, 2012
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Hi - True the cx series aren't the best, but enemy1 is correct, you have more than enough power to
run your system with it. I wouldn't replace the PSU unless you can definitely establish it as the
cause of your sound issue, which is extremely unlikely.

It does appear to be the GPU's sound output is the problem. If you use the same HDMI cable when using
the onboard sound card/gpu, it's a good bet it's the GPU. However, insure that your drivers are up to date.

 
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ramy_chaos

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Oct 13, 2010
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yeah the drivers are up to date. I've tried this with old drivers and with new drivers. I'm trying to find a PSU that i can use to test with a power rating over 500W. But guys, can you take a look at the screenshot and see if there's anything wrong with the power readings from HWMonitor?
 
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toyftw

toyftw

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Jul 29, 2012
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Hi again - one of the many frequent and knowledgeable posters here has sadin that HW monitor doesn't
provide accurate readings. If your voltages were as the screenshot depicts I doubt the PC would run at all.

You might have better accuracy with HWiNFO64.
 
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ko888

ko888

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Feb 18, 2009
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I don't think HWiNFO64 is up-to-date enough to report proper voltages for Z87 chipset motherboards. I've tried it on an ASUS Z87-PRO and it didn't show the right voltages.

Use the utility that came with your motherboard (i.e. GIGABYTE's APP Center - EasyTune's Hardware Monitor).
 
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Solution
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ramy_chaos

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Oct 13, 2010
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18,510
Thx so much for the help, guys! i tried both easytune and hwinfo64 and theyre both giving the same readings and theyre all good. looks like it really is a gpu problem. thx again :D
 
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