Stable OC For i7 8700k with Corsair H60

redflame2003 · Aug 5, 2018

Can anyone tell me a stable OC with the Corsair H60?
My cpu is 30 degrees when idle... I dont know how much it is under load
I have an ASUS Prime z370-a motherboard
thanks in advance

i also have a 550 Watt EVGA PSU which is 80+Gold

No GPU yet because I am going to buy the turing GPUs

Supernova1138 · Aug 5, 2018

That's going to vary depending on your individual CPU and its voltage requirements. I will say you probably won't get far overclocking with the Corsair H60, it's a weak AIO that's at best equivalent to a midrange air cooler, and the 8700k runs hot, especially once you start pushing the Vcore above 1.3V. High end air cooling or a 240+mm AIO are recommended, especially if you don't want to delid. I wouldn't be surprised if you basically cap out at about 1.25V before temps get too high.

Do keep in mind that by default the 8700k will TurboBoost up to 4.3GHz on all cores, so anything below that isn't really an overclock. Assuming your chip isn't terrible, you might be able to do 4.7GHz on all cores at about 1.25V but that's by no means certain. All you can do is experiment, eg. set a fixed Vcore say about 1.2-1.25, bump up the multiplier to say 46 or 47 and see if you are stable under stress testing, eg. Prime95, OCCT, Intel Burn Test. If you are stable and your temperatures aren't hitting the 90s or higher, then you can either try to push your clock speed higher, or dial back the voltage to get power consumption and temperatures down if you are happy where you are at.

redflame2003 · Aug 6, 2018

Supernova1138 :

That's going to vary depending on your individual CPU and its voltage requirements. I will say you probably won't get far overclocking with the Corsair H60, it's a weak AIO that's at best equivalent to a midrange air cooler, and the 8700k runs hot, especially once you start pushing the Vcore above 1.3V. High end air cooling or a 240+mm AIO are recommended, especially if you don't want to delid. I wouldn't be surprised if you basically cap out at about 1.25V before temps get too high.

Do keep in mind that by default the 8700k will TurboBoost up to 4.3GHz on all cores, so anything below that isn't really an overclock. Assuming your chip isn't terrible, you might be able to do 4.7GHz on all cores at about 1.25V but that's by no means certain. All you can do is experiment, eg. set a fixed Vcore say about 1.2-1.25, bump up the multiplier to say 46 or 47 and see if you are stable under stress testing, eg. Prime95, OCCT, Intel Burn Test. If you are stable and your temperatures aren't hitting the 90s or higher, then you can either try to push your clock speed higher, or dial back the voltage to get power consumption and temperatures down if you are happy where you are at.

I oced it using ez mode and it automatically oced it to 5 ghz. it is stable at 50 degrees and 67 degrees at 100% load

Supernova1138 · Aug 6, 2018

I would recommend running an extended stress test. AIOs give deceptively low temps in short stress tests because the liquid doesn't get saturated with heat instantly, it takes time for the temperature to equalize. You usually need to run under full load for about 20 minutes to get the temperature to equalize and that will be your true load temperature.

You may also want to check to make sure that under a stress test your clocks are staying at 5GHz. You have a somewhat weaker board, and autoOC features usually pump a lot of voltage into the chip to ensure stability (you shouldn't be exceeding 1.4V Vcore for day to day use). I wouldn't be surprised if you are getting throttled by current or VRM limits.

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