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Is CPU PLL Overvoltage Necessary for 4.7Ghz

post #1 of 4
Thread Starter 
My goal right now is 4.7Ghz. I am going for 50 passes of maximum on Intel Burn Test. I have had it fail at 42 passes on 1.385v so now I am trying 1.39v with Load Line Calibration on Level 1. I also flashed to F6x BIOS so I could enable CPU PLL Overvoltage but I wonder if is necessary with an OC of "only" 4.7. Any other voltages I should try at this point to get my 4.7? I have my RAM set low and auto for now. I will test it in Memtest+ later and then everything in Prime95.

Also I have not disabled any of the energy savers like C1E, EIST etc because I would like to keep them enabled when I use my computer. Or do you think I should disable them for the OC and then enable once I have found my stable OC. I figure if it is not stable with them enabled while I am overclocking then it won't be stable with them on while I am using my computer 24/7.

Thanks, Kent
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post #2 of 4
disable them if you want, I feel as if they destabilize the OC and kind of beat the point of OC, because with them enabled you will never hit 4.7ghz unless you are in IBT.

No CPU PLL Overvoltage is not needed until 4.8ghz+ in most cases I have seen, it is of no use until then.

BTW if I was you i would just do 4.5ghz fr 24/7 as it will save you a lot of hassle.
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post #3 of 4
Thread Starter 
OK thanks Sin. To be sure I understand correctly... You are saying if I keep those enabled during my 24/7 use of the computer overclocked at 4.7Ghz then I will not be completely stable even if I have passed all the stability tests. Or you don't think I can pass the stability tests at 4.7 with them enabled?
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post #4 of 4
People tend to lower the CPU PLL when going for high Overclocks.
I'm not experiences in SB Overclocking however have seen people drop the CPU PLL to 1.6v on the i7 920's etc when going above 4.5Ghz
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