Cant overclock 2600k

Hi all,

i just bought an h100 hoping to overclock my 2600k to 4.5 ghz (or thereabouts) in an asus p8z68-v pro

but when i came to put my multiplier and voltages in, it showed my my "target speed" correctly. However when i
saved changes and reset, the clock did not increase, and stayed at stock 3400mhz

it is probably a noob issue, but could someone help?
9 answers Last reply
More about cant overclock 2600k
  1. I have the same chip and a Z77 v-pro board, overclocked to 4.0Ghz @1.208v.

    There are many programs that won't show the overclock. (Windows still says I'm at 3.4 as well as some other programs.)

    What program(s) are telling you that you're running at 3.4Ghz?

    Also Are you checking your speed while under load or idle?
  2. Hi thanks for the quick reply

    The bios tells me that in asus ez mode, or the first menu tab in advanced mode.

    I have enabked PLL overvoltage, load line is at ultra high

    would you advise offset mode or manual for voltage?

    (if manual, v about 1.27)
  3. Hi thanks for the quick reply

    The bios tells me that in asus ez mode, or the first menu tab in advanced mode.

    I have enabked PLL overvoltage, load line is at ultra high

    would you advise offset mode or manual for voltage?

    (if manual, v about 1.27)
  4. I prefer offset voltage so that the CPU down-clocks and under-volts at idle.

    Whatever offset and LLC combo that gets you to ~1.3v should be good for +/-4.5Ghz

    Try CPU-Z software to see what clock speed you are running. (Check it while the CPU is under load with Prime95 or some other load test software.)
  5. Thanks,

    it was me being stupid.

    booted into windows and w/ p95 clock = 4500mhz

    my voltage is 1.44~1.46 so i will reduce load line C

    thanks loads though!
  6. Pretty high voltages. I usually try to stay under 1.4volts.
  7. Around 1.3V should get you to 4.5ghz, 1.4+ V should not be done on a closed loop cooler.
  8. A 2600K should run 4500 using way less voltage than the 1.44~1.46 you're running, you should drop down to the 1.275v area and start your overclocking process over testing for stability from there.
  9. dropped load line from ultra high to medium

    voltages 1.31V now
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