AMD Phenom II X4 965 BE Overclocking Help

Discussion in 'Processors and motherboards AMD' started by ericplatt, Jan 12, 2012.

  1. ericplatt

    ericplatt Member

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    OK so I've tried booting with 3.8GHz @ 1.4V, 1.425V, and 1.45V with LLC set to 100%. I've bluescreened on or just after windows login. Should I stick with 1.45V and step that LLC down until I boot?
     
  2. ericplatt

    ericplatt Member

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    I've booted with 3.8GHz @ 1.45v with LLC set to 80%. I haven't bluescreened yet. Hmm
     
  3. Pill Monster

    Pill Monster Banned

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    ^Sounds like ur making progress...:)

    You can drop the LLC lower if you want, but first we need to find your max OC and lowest stable volts.
    If LLC is too low it'll make your OC fail when the cpu is under load..

    So looks like you need 1.45v for 3.8, so raise your multi another notch to get 3900 but don't raise the vcore till it bsod's.

    Btw virtual machine should be disabled under cpu settings.
     
    Last edited: Jan 14, 2012
  4. ericplatt

    ericplatt Member

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    OK I'm sure it won't bluescreen on desktop - but I have a question.. for this kind of testing should I put running the In-place large FFTs test, Blend, or Small FFTs? I have been using the In-place large FFTs test
     

  5. Pill Monster

    Pill Monster Banned

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    Small should be enough imh, a lot of people use blend but I don't.
     
  6. ericplatt

    ericplatt Member

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    It sure was enough to make me bluescreen lol, trying @50% LLC
     
  7. Pill Monster

    Pill Monster Banned

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    ^You need to raise llc not lower it if it bsod's under load. Just set it at 100% for now while you testing with prime.
     
  8. ericplatt

    ericplatt Member

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    I can't boot if I go any higher than 80% though - I bluescreen on windows login :S
     
  9. Pill Monster

    Pill Monster Banned

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    That's strange. Oh well ...whatever works then I guess....
     
  10. ericplatt

    ericplatt Member

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    50% hasn't blow up on prime yet. It has only been 5 minutes but that's 5 minutes longer than anything else! I'll let this sit for a bit. I still don't really understand LLC though >.>;
     

  11. Pill Monster

    Pill Monster Banned

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    LLC compensates for vdroop. Vdroop is when the vcore drops due to the CPU having a load put on it.

    Sounds good so far..
     
  12. Agent-A01

    Agent-A01 Ancient Guru

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    i dont like anything more than 50% llc, higher than that shoots voltage up way too much. Id rather have a higher vcore with a lower LLC % than lower vcore with a higher LLC %.
     
  13. ericplatt

    ericplatt Member

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    well I bluescreened about 10 minutes in with 50% so I'm trying 35% LLC, still at 3.8GHz with voltage set to 1.45V. AIDA65 suggests that I never pass 1.424V though
     
  14. J.B.west

    J.B.west Banned

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    I cant OC my 965 BE over 3.8 myself no matter what I do!! I wish I could do 4.2
     
  15. IcE

    IcE Don Snow Staff Member

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    Lol that doesn't prove anything. Just being able to get to CPUZ doesn't mean a whole lot. There's simply no way you're actually using the chip at those settings 24/7 and getting full stability.
     

  16. OneMustFall

    OneMustFall Active Member

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    ^^^^^^:war:
     
  17. ericplatt

    ericplatt Member

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    2 and 1/2 hours on prime so far - seems to be doing ok with 30% LLC and 1.45V with 3.8 GHz. I wonder if trying to clock higher will require more or less LLC? or the same?

    Going to let prime run during the night, I'll update in the morning.

    Thanks again guys! Lots of good information, very helpful!
     
  18. Agent-A01

    Agent-A01 Ancient Guru

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    same llc but more vcore most likely.
     
  19. ericplatt

    ericplatt Member

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    It bluescreened around 8am apparently - so prime95 ran for 8h30 minutes. Should I try continuing to lower the LLC slightly, or maybe up the voltage?
     
  20. Extraordinary

    Extraordinary Ancient Guru

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    Booting and validation is one thing, running Prime 95 for a few hours will kill it straight away, there is no way a 955 is stable @ 4.2Ghz @ 1.35v

    1.35v is the stock voltage for the 965 @ 3.4GHz
     

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