4770k overclock question

fitztronic · Jun 23, 2013

what do i need to change in order to have a 4770k run completely stable at 4.3ghz?

Soda-88 · Jun 23, 2013

Set Vcore to auto, run a stress test (OCCT) for few minutes while monitoring the voltage with CPU-Z, write down the max voltage, set Vcore to manual and punch in the voltage you wrote down, retest for 15 mins, if stable reboot, drop Vcore down a notch, retest, rinse and repeat until you start crashing then turn Vcore up to stable value, test for couple of hours and if it doesn't crash you're good to go.

Eximo · Jun 23, 2013

I tried finding it again, but wasn't able to. On overclock.net forums there was a good thread going where everyone posted their overclocks and voltages. A few people, of course, got lucky and have chips that will clock very high at low-voltage.

Average seemed to be 1.2 - 1.275 to reach 4.3Ghz

I've got mine stable at 1.237 volts @ 4.3 (was able to back down from 1.25 and shave a few degrees off)

mbreslin1954 · Jun 23, 2013

Does this mean that the base clock is moved from 3.5 GHz to 4.3 GHz? If so, what does turbo do, or is there no turbo mode left after this overclock?

Eximo · Jun 24, 2013

For Ivy and Haswell, turbo mode is your overclocking method. You set the maximum turbo mulltiplier, as long as the CPU is under load, and has the thermal overhead it will run at the indicated speed. When not under load it will try to run at 3.5Ghz. Setting the voltage manually will mean that there is no power savings between the two speeds. With everything on auto it will reduce voltage at the lower frequencies.

To force it to run at full speed all the time you can changes Windows power options to Maximum Performance mode.

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4770k overclock question

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