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Thread: Core i7/X58 Overclocking Thread

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  1. #11
    Xtreme Addict
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    Quote Originally Posted by scyzer View Post
    I cant boot into Windows, but I can't get a higher than 3.7GHz clock prime stable.

    I've tried multiple things, different voltages for various settings, different multipliers, etc.

    Can't get Bclk above 185. Maybe I can try an even lower CPU multi to see if it is even possible to get the Bclk higher with my setup.

    If you could provide a bit of help (do you need more details?) that would be great.
    Sure, let's see what you max BCLK is to start...also, please post your system configuration and current settings...

    Drop your multiplier to 12x, then set your BCLK to 170MHz to start. Set your CPU Voltage to 1.35V, and your QPI Voltage (VTT Voltage) to 1.35V, and make sure your DRAM voltage is set to 1.65V (or very close to that). Also, set your memory to a low multiplier so that you are running your memory below its rated speed. Try to boot Windows. If you boot fine, restart and increase your BCLK by 10MHz to 180MHz. Then if you boot again, increase it by another 10MHz until you get to 200MHz. After 200MHz increase your BCLK in 5MHz increments until you get to 215MHz. Then increase it in 1MHz increments and see if you can boot.

    If at any point you cannot boot, increase your QPI Voltage (VTT Voltage) by 0.025V and try again. Keep increasing it by that amount until you can boot at the given BCLK. Do not exceed 1.475V on QPI. For example, if you cannot boot at 190MHz with 1.35V QPI and you increase the voltage twice (2 x 0.025V) to 1.4V QPI and then you boot fine, you need a minimum 1.4V QPI for 190MHz BCLK. If you want to be sure that the given BCLK is stable then take the minimum QPI voltage required to boot and add about 0.025V to 0.05V to it.

    By the way, check your private messages. I need some help from you as well.
    Last edited by dejanh; 03-24-2009 at 08:25 AM.

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