Weird Sound from Motherboard, near CPU?

[ax77]

Hey everyone, I'm hoping this is the right section to ask my question.

Basically, I just bought a new PC (I built it myself):
i5 2500k (running with stock cooler just for now)
ASUS p8z68v
corsair vengeance 8gb of ram 1600 mhz
gtx 285
ULTRA 650W psu

i'd also like to mention i heard a weird sound around the CPU area.. it was a bit high pitched, but when i run Prime 95 stress test, the sound went away... as soon as i stopped it, it came back... should i be worried? is the motherboard or cpu defective?


anyways, i'm getting around 67-66-69-68 currently after 25 minutes... are these temps normal with stock cooler?? thanks!

 

[DJDeCiBeL]

I hear the same thing from my P8Z68-V LE. I THINK it's from the VRM's, but I never have figured it out. It seems to be a common thing on Asus boards though, so I just don't worry about it, and it's not THAT annoying anyway (I can only hear it with my ear literally right up next to the mobo).

As far as temps go, they're fine for the stock cooler. Just as a comparison though, I have a little less than that (low to upper-mid 60's, depending on room temp) @ 4.5Ghz and 1.277V in Prime, with a Hyper 212 Evo.

 

[ax77]

someone has the same problem as me!!

http://www.tomshardware.com/forum/309045-28-cooler-squeal

apparently turning off c3 and c6 does the trick.. how do i turn it off?

 

[DJDeCiBeL]

someone has the same problem as me!!

http://www.tomshardware.com/forum/309045-28-cooler-squeal

apparently turning off c3 and c6 does the trick.. how do i turn it off?

That seems to support my theory that it's the VRM's. Turning the power states off, along with SpeedStep, takes a lot of stress off of the VRM's.

I just say don't worry about it, unless you have REALLY sensitive ears and can't stand it. It's not hurting anything.

 

[HEXiT]

the vrm is a good possibility and the most likely if its on the motherboard.
it may also be a problem with the heatsync.. press down on each corner if it goes away its likely theres an air gap or some dirt causing a whistle/squeel

 

[DJDeCiBeL]

I'll add that when I turn on the High Performance power plan in Windows (which effectively disables SpeedStep, at the expense of not being able to down clock at idle), it stops for me too.

 

[DJDeCiBeL]

it may be a problem with the heatsync.. press down on each corner if it goes away its likely theres an air gap or some dirt causing a whistle/squeel

It's not unless every person that has this problem on an Asus mobo has a bad HSF installation (very improbable)...

 

[amuffin]

It's probably a coil on the board.

 

[ax77]

Turning off C3 and C6 worked guys. Thanks!