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Thread: Core Unlocking

  1. #17
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    Re: Core Unlocking

    I'm in same coloured and it's showing as unganged, I don't really care so long as it's dual channel
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    Not a good person scaryjim's Avatar
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    Re: Core Unlocking

    Quote Originally Posted by nibbler View Post
    ... roughly the same as a stock 940 BE. ...
    That because you've essentially *got* a 940! Lucky bugger...

    AFAIK, the difference between ganged and unganged is that one treats the memory as a single 128bit channel and one treats it as two 64-bit channels. The upshot of which is (afaict) that if you're having a conversation about ganged or unganged then you're definitely running dual channel (as single channel wouldn't give you either option!). Although I'm not an expert, and I'll happily cede to someone with greater knowledge than I...

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  4. #19
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    Re: Core Unlocking

    I'm happy with unganged. Not sure how I can change it and I'm almost certain it makes little to no difference irl.
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  5. #20
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    Re: Core Unlocking

    Quote Originally Posted by scaryjim View Post
    That because you've essentially *got* a 940! Lucky bugger...
    Mmm... I'm getting bored with it I might 'upgrade' it to a 965 Black edition ;D
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  6. #21
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    Re: Core Unlocking

    Little bump

    What is the option I see in the bios when I am unlocking about +/- %, i e +10% down to -10%. What does this mean? Apparently it affects stability, or so says a bit-tech article about their chip only being stable on -6% whatever that means.
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    root Member DanceswithUnix's Avatar
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    Re: Core Unlocking

    Quote Originally Posted by nibbler View Post
    Little bump

    What is the option I see in the bios when I am unlocking about +/- %, i e +10% down to -10%. What does this mean? Apparently it affects stability, or so says a bit-tech article about their chip only being stable on -6% whatever that means.
    That is supposed to be for users of the original Phenom, so not of use for you.

    Basically seems to set timing margins on those CPUs to allow you to overclock beyond 3GHz.

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  9. #23
    root Member DanceswithUnix's Avatar
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    Re: Core Unlocking

    Quote Originally Posted by scaryjim View Post
    That because you've essentially *got* a 940! Lucky bugger...

    AFAIK, the difference between ganged and unganged is that one treats the memory as a single 128bit channel and one treats it as two 64-bit channels. The upshot of which is (afaict) that if you're having a conversation about ganged or unganged then you're definitely running dual channel (as single channel wouldn't give you either option!). Although I'm not an expert, and I'll happily cede to someone with greater knowledge than I...
    That is my understanding too.

    Unganged is the modern way, I believe because it allows two cores to fetch independently at lower bandwidth when needed rather than having to wait for each other. Horses for courses.

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  11. #24
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    Re: Core Unlocking

    Just installed a big ol' xiggy - love these, cheap as chips and great cooling. Covered in blood (which always seems to happen when im installing stuff in the computer) but apart from that all is well. And cooooool
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    Re: Core Unlocking

    http://img40.imageshack.us/img40/7847/setuprv.png

    Pic is huge so just gonna link to it, but that's me atm. I put the HT link to 1760 because i read that that is more than enough anyway and that high speeds can cause stability issues with unlocks. Vcore up at 1.37 just to keep it stable and core temp is (roughly) 55C I think, judging by the temp sensor on the CPU reading 49 and the core tending to be a touch higher.
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  13. #26
    Efficiency freak Queelis's Avatar
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    Re: Core Unlocking

    Quote Originally Posted by nibbler View Post
    http://img40.imageshack.us/img40/7847/setuprv.png

    Pic is huge so just gonna link to it, but that's me atm. I put the HT link to 1760 because i read that that is more than enough anyway and that high speeds can cause stability issues with unlocks. Vcore up at 1.37 just to keep it stable and core temp is (roughly) 55C I think, judging by the temp sensor on the CPU reading 49 and the core tending to be a touch higher.
    I've found that at least on my Phenom the actual CPU temperature ("Core") is always lower than the one shown as "Temp", so you should be OK.

    By the way, had you encountered instability before, or did you simply up the voltage "just in case"? That way you might be simply heating the CPU unnecessarily. Undervolt FTW

  14. #27
    Senior Member Pob255's Avatar
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    Re: Core Unlocking

    Personally I don't trust speedfan for temps, according to it your "Core" temp is 0c and something else is -128c
    I'm sure it must work correctly on some motherboards, but I've yet to find one where it does.

    AMD overdrive would probably give you better temp readings and I find GPU-Z is very good for gpu temp readings

  15. #28
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    Re: Core Unlocking

    Quote Originally Posted by Queelis View Post
    I've found that at least on my Phenom the actual CPU temperature ("Core") is always lower than the one shown as "Temp", so you should be OK.

    By the way, had you encountered instability before, or did you simply up the voltage "just in case"? That way you might be simply heating the CPU unnecessarily. Undervolt FTW
    It crashed once before at 0.05v less, so upped and now it's stable for 7:45 on prime 95. That was with lower clock speed, not sure why it crashed actually.
    Quote Originally Posted by Pob255 View Post
    Personally I don't trust speedfan for temps, according to it your "Core" temp is 0c and something else is -128c
    I'm sure it must work correctly on some motherboards, but I've yet to find one where it does.

    AMD overdrive would probably give you better temp readings and I find GPU-Z is very good for gpu temp readings
    When you unlock a core the temp sensor gets disabled. "Temp:" is the CPU temp but the core temps don't work. So long as your CPU temp is within 5C of the safe limit, you're supposed to be ok.


    Gonna try and get to close to 4 Ghz maybe
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    Re: Core Unlocking

    I like HWmonitor atm.

    Gigabytes OC software allow to you to make changes on the fly. I'm not sure if it lets you change the FSB though as in my case I was playing with the multiplier. The MSI is probably similar and may save you rebooting each time and may save some CMOS clearing.

    Apologies if you already know this.

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  18. #30
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    Re: Core Unlocking

    Might keep it at 3.4. BSOD at 3.6 with same voltage so seeing as I don't do anything taxing on the cpu, I'll just leave it at stock volts (1.376) of a 965 BE.
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  19. #31
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    Re: Core Unlocking

    And the 4th core is now refusing to co-operate even with the same settings which were stable last night for 8 hours on p95 before I started tinkering this morning. Manually locked out the 4th core and stress testing with 3 cores + the unlocked cache at 3.5 ghz now.
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  20. #32
    Not a good person scaryjim's Avatar
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    Re: Core Unlocking

    Don't forget that the locked core was disabled for a reason. It's quite possible that 8 hours of Prime95 have exacerbated whatever problem caused the chip to be binned in the first place. Remember the Northwood P4, that died on its rear if you ran it overvolted for any length of time? Could just be a faster version of that problem...

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