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Electricity noise on X370 Taichi

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=5314
Printed Date: 30 May 2024 at 12:10am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Electricity noise on X370 Taichi
Posted By: andRocky
Subject: Electricity noise on X370 Taichi
Date Posted: 06 Jun 2017 at 7:03am
" rel="nofollow - Hello guys, after build my PC on R5 1600X with Taichi board and update BIOS to 2.30v. i hearing some electricity noise from VRM or Processor when computer is started (without tasks), but if rus some stress test (my exemple is AIDA64) noise is gone. After canceling is starting again. Someone have decision this problem? Ahh ya processor runs a stock frequency (in Auto).



Replies:
Posted By: parsec
Date Posted: 06 Jun 2017 at 11:50am
" rel="nofollow -
Originally posted by andRocky andRocky wrote:

Hello guys, after build my PC on R5 1600X with Taichi board and update BIOS to 2.30v. i hearing some electricity noise from VRM or Processor when computer is started (without tasks), but if rus some stress test (my exemple is AIDA64) noise is gone. After canceling is starting again. Someone have decision this problem? Ahh ya processor runs a stock frequency (in Auto).


That sounds like capacitor or inductor noise from components in the CPU's VRM stage, from CPU power saving options (Cool n Quiet, C States) being enabled, and a PSU with high DC ripple in the +12V rail.

What model of PSU are you using?

The noise is gone during stress testing because the CPU is under high loads and not in a higher C State power saving mode.

Very high frequency noise like this can be very difficult to know where it is coming from. Why are you sure the noise is coming from the area near the CPU? The PSU can make noise like that too. Is the board inside a PC case?


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Posted By: andRocky
Date Posted: 06 Jun 2017 at 12:15pm
Originally posted by parsec parsec wrote:

" rel="nofollow -
Originally posted by andRocky andRocky wrote:

Hello guys, after build my PC on R5 1600X with Taichi board and update BIOS to 2.30v. i hearing some electricity noise from VRM or Processor when computer is started (without tasks), but if rus some stress test (my exemple is AIDA64) noise is gone. After canceling is starting again. Someone have decision this problem? Ahh ya processor runs a stock frequency (in Auto).


That sounds like capacitor or inductor noise from components in the CPU's VRM stage, from CPU power saving options (Cool n Quiet, C States) being enabled, and a PSU with high DC ripple in the +12V rail.

What model of PSU are you using?

The noise is gone during stress testing because the CPU is under high loads and not in a higher C State power saving mode.

Very high frequency noise like this can be very difficult to know where it is coming from. Why are you sure the noise is coming from the area near the CPU? The PSU can make noise like that too. Is the board inside a PC case?
My PSU is Seasonic Platinum 660W (SS-660XP2). I run system without case on stand and hearing that noise is a VRM zone, not shure is CPU - maybe capacitors ya ... nothing change on bios options, try some CPU saving options disabled. 


Posted By: andRocky
Date Posted: 10 Jun 2017 at 5:44am
Problem is frome stock voltages on no-tasks mode, psu is fine.... in HWiNFO64 my CPU Core Voltage (SVI2 TFN) is up to 1.57v - i dont now why is so much for 3.699MHz, decision for that moment is disabled global c-states - noise gone.


Posted By: andRocky
Date Posted: 10 Jun 2017 at 6:23am
But after off PC not turn on ....


Posted By: nReal
Date Posted: 13 Sep 2017 at 5:23pm
" rel="nofollow - Any news / fixes for this?


Posted By: Ivan_83
Date Posted: 13 Sep 2017 at 5:27pm
Turn off C6 in BIOS.



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