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Overclocking AMD Phenom II X2 555 Black Edition Callisto 3.2GHz ISSUES

mobo: MSI 870-g45
Ram: G.Skillz 2x2Gb Ripjaws at 1600MHz 8-9-8-24-32-1T (running stable, 3 passes with memtest86+ no errors)


First... i couldnt unlock any cores, but i gave up on that.... now i can not go over 3.7Ghz, anything over is unstable (increasing multiplier). VID vcore is 1.275v for this processor. I have pushed as far as 1.4volts where it only requires 1.3 to boot windows, but no success. Blue screen of death a couple minuties into Prime95. RAM is stable according to Memtest86+...


NB Frequency: 2600Mhz
CP-NB VDDV is 1.3v
HT blink speed x12
FSB/DRAm 1:4 (1:3.333 is default)


Suggestions guys? Thanks

Increase Voltage to NB?

EDIT: I noticed my mobo does not supply a stable current to the Vcore, when set at 1.375 it ranges from 1.368 to 1.384 according to CPU-Z.

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More about overclocking phenom black edition callisto 2ghz issues
  1. Test 2, 4000 Lucas-Lehmer iterations of M19922943 using 1024K FFT length.
    FATAL ERROR: Rounding was 0.5, expected less than 0.4
    Hardware failure detected, consult stress.txt file.


    ^^^^^^ That's not RAM is it?
  2. Try dropping the NB Frequency back to 2000Mhz, overclock from there and raise it as a fine tune later.
  3. 4Ryan6 said:
    Try dropping the NB Frequency back to 2000Mhz, overclock from there and raise it as a fine tune later.


    Will do that. Thanks

    Quote:
    So at 3.7, what speed are you running your memory? If the memory is running faster than spec, that could be the limitation.


    Quote:
    So at 3.7, what speed are you running your memory? If the memory is running faster than spec, that could be the limitation.


    I am running RAM at 8-9-8-24-32-1T at 1600MHz, it is rated at 9-9-9-24-2N. I've got the g'skillz ripjaws series 1600MHz.

    It was automatically set to 1333 by the processor so i had to manually change it in bios.

    My windows 7 score:

    PCU 6.7
    RAM 7.6
    GPU 7.5
    HDD 5.9

    So memory is the strongest point... Would you recommend dropping it to stock volts,specs? I am running it at 1.55v instead of 1.5 suggested.


    Thank you.
  4. Here i took a snapshot of vital info :)

  5. ttt
  6. Lower your HT Link and North Bridge Frequency to 1GHz (5x multiplier). Leave the FSB alone until you've maxed out on the multiplier. You should also disable Cool n Quiet in the BIOS and if you're not going to use any virtual machines (including XP mode) then you may as well disable AMD-V as well.
  7. Best answer
    ^ once you've maxed out on your core speed you can raise your HT Link and North Bridge speeds again to see what you can get and remain stable. As long as they are over 1Ghz though there isn't much of a detriment to your performance at all.
  8. megamanx00 said:
    Lower your HT Link and North Bridge Frequency to 1GHz (5x multiplier). Leave the FSB alone until you've maxed out on the multiplier. You should also disable Cool n Quiet in the BIOS and if you're not going to use any virtual machines (including XP mode) then you may as well disable AMD-V as well.

    I can not locate AMD-V anywhere in the bios..
  9. still stuck at 3.7.............
  10. You most likely need more than 1.4V to get over.
  11. how far can i push the voltage?

    the VID is only 1.275
  12. Its the core voltage not the VID and anything under 1.5 is OK as long as the temps are not peaking over 62C
  13. I know that i'm a bit late but im running this processor on an asus M4A88TD-V Evo/USB3 and i'm getting it up to 4.1ghz

    Multiplier is on 17.0
    Bus speed is 240MHz
    HT Link is on auto but is at 2410Mhz
    Voltage is the stock 1.375V

    I get an an occasional error on prime 95 but if you give the system10mins to warm up and get to work then there don't seem to be any problems.

    with the above settings you should be able to run your ram at 1600Mhz as well ( I can and i have 12gb of corsair with stock timings of 9-9-9-24)

    Hope that helps
  14. I'm running mines at 4Ghz,

    20x Multi and all else stock apart from vcore which is at 1.375V or 1.4V 9I forget).
  15. This topic has been closed by 4ryan6
  16. Best answer selected by Klimentiy.
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