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Is one of my CPU cores going bad? Coil whine

post #1 of 7
Thread Starter 
I recently did a new build using most of my old components......just added new PSU, case and hard drive.

I have the 1st gen intel core i7 bloom field 2008-2009 in a gigabyte mobo from the same year...with a new corsair TX650M PSU

I am getting a loud whine/squeal from the psu when the CPU is working. either it didnt do it with my old psu, or it wasnt as loud so that i didnt notice......

I tried 2 other power supplies, so its not the psu itself..

I tried everything.....disabling, swapping cables, removed graphics card, BIOS changes etc etc

This is what it looks like when I have cubase running...


post #2 of 7
How did you jump to the conclusion that one of your CPU cores is bad from the fact that you are getting coil whine in the PSU?

Coil whine is a very common phenomenon, especially with new PSUs. Give it time, and it will go away. If it doesn't, and it bothers you, RMA it.
post #3 of 7
Something going wrong with your cpu would not cause coil whine in the psu. Coil whine is pretty much specifically a psu problem. It will either go away with time or you have a permanent problem with that psu.
post #4 of 7
Thread Starter 
so why in task manager is one of the cores spiking like that? its not the psu as I have tried 3 different ones.

anyways, In power options, i had it set to high performance. When i clicked on he power saver plan, the noise goes away instantly....however the cpu is still spiking...so the problem didnt go away, just the noise.
post #5 of 7
Did you have any programs running when you got that picture of the spike on one core? Try running a stress test like prime95 or intel burn test and see if your cpu is stable.
post #6 of 7
Thread Starter 
Quote:
Originally Posted by packerbackermk View Post

Did you have any programs running when you got that picture of the spike on one core? Try running a stress test like prime95 or intel burn test and see if your cpu is stable.

Yes, Cubase 6 was running. However, I would get those spikes with the noise during startup without cubase even installed......
post #7 of 7
First off, we have to separate these two issues:

PSU Coil Whine: caused by power draw on new PSUs. Goes away with time. Switching to power saving mode allows the computer to keep the CPU in power save mode longer (i.e. until processing demands get higher than would be acceptable in "high performance"), along with allowing the computer to put unused peripherals to sleep. This is why the whine goes away.

CPU issues: (And I hesitate to call them issues at all.) You're observing a program that probably doesn't do a great job of using the CPU.

The best way to test if you are having problems with your CPU is to run a program like Prime95, which is specifically designed to do that. Eyeballing task manager and saying "ohh, that CPU use pattern doesn't look right" isn't going to provide you any legitimate diagnostic information.
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