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Thread: 4th core, How to

  1. #1
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    Default 4th core, How to

    Hello one and all! First time post, as I'm new to the "power user" environment. I would like to pop the fourth core on my x3 455, (that's why I bought it in the first place). Before I do this though, should I go back to default speed on my chip, or does it matter. Not to sound demanding, but I'm a tell me the steps first then the why after if you would, please?

  2. #2
    TCC
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    Default Re: 4th core, How to

    First, you have to understand that unlocking the extra core is dangerous and can cause systemic distabilization. But, if you are fine with that, I would screenshot your current settings for bios so you can return it to where it is now if you want to return. Then, go into your BIOS and in the OC Tweaker tab, set CPU Active Core Control to enable if it isnt, then restart your computer and if your processor is unlockable, you will see additional cores available to enable. Note that some processors are not unlockable. If you are having issues starting, you may have to increase your VCore slightly to allow it to work.

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    Default Re: 4th core, How to

    TCC pretty much set you up, but make sure you do a 12+ hour test with prime95. Unlocking the extra core can cause way more problem that aren't on the surface prime95 will let you know if your system is 100% stable with the extra core unlocked. If it fails prime the first few times up the vcore a little each time, make sure you are monitoring your temp also! Good Luck and Welcome to PureOC!

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    TCC
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    Default Re: 4th core, How to

    In addition to what James said, which is all a great idea, take each temperature measurement with a grain of salt. In some cases, core temperature readouts from the CPU would stop after core unlocking.

  5. The following user thanks TCC For this above post:

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    Default Re: 4th core, How to

    Thank you for the quick reply, I'll give a run in the morning.

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    Default Re: 4th core, How to

    I Would only stress a core if you dont have watercooling, because overclocking can lower its life to months, or even days.

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    Default Re: 4th core, How to

    OK, here's followup. Set the clock to 3.3(default), CPU-Z showed normal, restart, CPU/ACC, Enabled, CPU-Z showed no change. In the OC Tweaker tab there is the setting for Advanced Clock Calibration. The choices are Disabled(default), Auto, All Cores, and Per Core. I left it alone, but was wondering if this would help at all, or just leave it alone? I don't like to leave something like this alone unless I'm sure all bases have been covered. Just in case, I checked and found that there is an update for my bios. I've heard the general rule here is "if ain't broke don't fix it". Would the update improve my chances, or am I pretty much done with the whole core-unlock thing?

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    Default Re: 4th core, How to

    Quote Originally Posted by Mystikhol9 View Post
    The choices are Disabled(default), Auto, All Cores, and Per Core. I left it alone, but was wondering if this would help at all, or just leave it alone? I've heard the general rule here is "if ain't broke don't fix it". Would the update improve my chances, or am I pretty much done with the whole core-unlock thing?
    Set it to "All Cores". I would update the bios and no it wont help any just a good rule of thumb to follow, but do update the bio's before you try and unlock the 4th core. I would also disable cool and quiet.

  10. #9
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    Default Re: 4th core, How to

    OK... Bios update, done. As per suggestion I set CPU ACC, enable, set ACC to all cores, had to clear cmos. Tried CPU/ACC alone, restart, no problem. Went back and set ACC to all cores, cmos again. I noticed when all cores was set there "Value settings" from -2% up to +12%. What are these Values about?

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