Overclocking FX 8120 - Can't get past 4.3K

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  1. Posts : 537
    Windows 7 Ultimate x64 SP1
       #1

    Overclocking FX 8120 - Can't get past 4.3K


    New to overclocking.
    I've been following some tutorials I found here, in OC.net and in Oveclockers.
    I've been able to take my 8120 to 4.3K, 1.4V (CPUZ) at full load. Very stable with RAM OC'ed to 1866 10,11,10,27.
    Temps are nice and low, 49C max (core temp) after 4 hours prime95 blend.
    All power saving options are disabled. Turbo is disabled, cool'n'quiet is disbled.
    LLC set to ultrahigh, NB LLC high, Phase extreme.
    It was trial an error. With this settings I'm stable.

    I'm only doing voltage and multiplier so far, since the other settings are kind of cryptic for me at this stage.

    Turned RAM to default settings (1600 CL9), and tried increasing multiplier to 22x, doing small increment voltage adjustments. I didn't dare go beyond 1.46V.
    Anything beyond 21.5x and I fail prime95 blend within a couple of minutes or get BSOD at boot.

    I would like to get to 4.5K stable since I understand it is easy to achieve on an FX 8120.

    Any advice would be very much appreciated.

    J
      My Computer


  2. Posts : 1,326
    Windows 7 Ultimate x86
       #2

    Have you tried adjusting the fsb (bclk)
      My Computer


  3. Posts : 537
    Windows 7 Ultimate x64 SP1
    Thread Starter
       #3

    No, I haven't, but I don't want to do FSB yet since it modifies all clocks together.
    I want to be able to do it through multiplier. It seems that doing 22.5x on this processor shouldn't be difficult.
    Thanks for your help Pedro.
      My Computer


  4. Posts : 1,326
    Windows 7 Ultimate x86
       #4

    Listen... Up the FSB up a bit, it will be the only way to get higher clocks, as long as you dont go mad.

    All you ahve to do to get to 4.5 is up the FSB by 10, this will get you 4.515 GHZ. There will be no side effects to raising it to 210 and you could problably get it up to 4.7 by gradually changing in it to 220. If it doesnt boot then just clear the cmos and apply the last settings it booted with.


    Raising the fsb a little bit wont hurt, it is the only way to reach higher clocks
      My Computer


  5. Posts : 7,466
    Windows 10 Home Premium 64bit sp1
       #5

    My 4.5 overclock on the 8120 these are my results from Threads me and others made

    https://www.sevenforums.com/overclock...king-cpus.html


    Also some boards limit overclock
      My Computer


  6. Posts : 1,326
    Windows 7 Ultimate x86
       #6

    Do you agree that you need to up the fsb to reach that oc?
      My Computer


  7. Posts : 7,466
    Windows 10 Home Premium 64bit sp1
       #7

    pedroc1999 said:
    Do you agree that you need to up the fsb to reach that oc?
    yup these chips love FSB
      My Computer


  8. Posts : 1,326
    Windows 7 Ultimate x86
       #8

    The world record uses 265+ if im correct.
      My Computer


  9. Posts : 537
    Windows 7 Ultimate x64 SP1
    Thread Starter
       #9

    Did FSB. Didn't work. Prime95 blend failed within the minute
    Multiplier 21.5X, FSB 205.
    Upped voltage to 1.425V, memory set to default values. Anything else I should be doing?
    Thanks for your help.
      My Computer


  10. Posts : 1,326
    Windows 7 Ultimate x86
       #10

    Try to lower multiplier and increase fsb
      My Computer


 
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