The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Studio XPS 1647, CPU Whine!!! :(

    Discussion in 'Dell XPS and Studio XPS' started by ajdude101, Dec 31, 2010.

  1. ajdude101

    ajdude101 Notebook Enthusiast

    Reputations:
    0
    Messages:
    40
    Likes Received:
    0
    Trophy Points:
    15
    Hi, just bought my Dell Studio XPS 1647 from Best Buy, and after a few hours of use I noticed that there was a high-pitched noise emitting from the computer. I did some googling and I found that it is actually called CPU whine! I can;t find a faw to fix this problem! :( Does anyone know a solution? I don't want to bring it back to Best Buy because I got it for an awesome price ($549.99) and it was the last one left. Here are my specs:

    ATI Mobility Radeon HD 4670
    Intel Core i5 430M, 2.53 GHz
    4 GB DDR3 1333 MHz

    Thank you so much!
     
    ajdude101, Dec 31, 2010
    #1
  2. wlfng2005

    wlfng2005 Notebook Consultant

    Reputations:
    39
    Messages:
    292
    Likes Received:
    0
    Trophy Points:
    30
    I am not aware of any CPU whine since CPU is not a moving part. It should be either the hard drive or your fan is whining.
     
    wlfng2005, Dec 31, 2010
    #2
  3. Raether916

    Raether916 Notebook Consultant

    Reputations:
    8
    Messages:
    219
    Likes Received:
    0
    Trophy Points:
    30
    contact dell and get replacement MOBO and CPU. - But ill bet they will replace the fan, HDD, DVD first....
     
    Raether916, Dec 31, 2010
    #3
  4. Darkstone

    Darkstone Notebook Consultant

    Reputations:
    45
    Messages:
    253
    Likes Received:
    1
    Trophy Points:
    31
    an cpu can whine, an combination of a bad sample and C6 idle state makes the transistors oscillate in an certain frequention, emitting an high pitched noise only heard by young people.

    solution: disable C6 killing your battery life by around 50%, as far im aware, this is the "best" fix avaible.

    i tested the result of disabeling idle stated altogether on my p8600 processor:

    [​IMG]

    i know the graph reads c3 diable, it actually means toggeling the disable idle states in windows settings.
    the yellow and red lines represent energy usage when watching youtube video's
    the X axix represent the processor speed i was using, and yes, higher speeds are actually more efficient at idle as long the voltage stays the same.
     
    Darkstone, Dec 31, 2010
    #4
  5. ajdude101

    ajdude101 Notebook Enthusiast

    Reputations:
    0
    Messages:
    40
    Likes Received:
    0
    Trophy Points:
    15
    Thanks for the reply! How would I go about disabling the C6? Thank you!
     
    ajdude101, Dec 31, 2010
    #5
  6. rocking23nf

    rocking23nf Notebook Enthusiast

    Reputations:
    0
    Messages:
    15
    Likes Received:
    0
    Trophy Points:
    5
    I have the same problem, i bought a cooling pad and havent had the problem happpen since. It was getting really annoying and i was going to return the laptop.
     
    rocking23nf, Jan 1, 2011
    #6
  7. Darkstone

    Darkstone Notebook Consultant

    Reputations:
    45
    Messages:
    253
    Likes Received:
    1
    Trophy Points:
    31
    enter regedit, change "attibutes" key from 1 to 0 in this path:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\5d76a2ca-e8c0-402f-a133-2158492d58ad

    in the power settings, there will be an new option under "processor power management": processor idle disable, toggle this. High pitches noise should disappear.
     
    Darkstone, Jan 1, 2011
    #7
  8. JKleiss

    JKleiss Notebook Evangelist

    Reputations:
    261
    Messages:
    660
    Likes Received:
    0
    Trophy Points:
    30
    and so will turbo boost iirc
     
    JKleiss, Jan 1, 2011
    #8
  9. ajdude101

    ajdude101 Notebook Enthusiast

    Reputations:
    0
    Messages:
    40
    Likes Received:
    0
    Trophy Points:
    15
    WOW, thank you so much!!!
     
    ajdude101, Jan 1, 2011
    #9