Question About My 7700k 4.8 OC

I managed to get my i7-7700k to OC with 4.8ghz using 1.210v, but I wanna make sure this is correct and working normal

so far running realbench with no crashes my voltage value is switching from 1.200 to 1.216 (even tho I have it set to 1.210) on HWMonitor every other second when heavy load occurs and after the load is let off is this normal? Or is the jumping bad?

does having my voltage this low for a 7700k at 4.8ghz un heard of or not normal?

i wanna make sure I don't damage my CPU

HWMonitor Screenshot
Reply to xoVague
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More about question 7700k
  1. Voltage changes like that are not unusual. You can do your best to reduce them via LLC settings, but it's practically impossible to completely avoid slight fluctuations.

    As long as the voltage stays in a safe range, it won't damage the CPU.
    Reply to Sakkura
  2. Sakkura said:
    Voltage changes like that are not unusual. You can do your best to reduce them via LLC settings, but it's practically impossible to completely avoid slight fluctuations.

    As long as the voltage stays in a safe range, it won't damage the CPU.


    So that 0.016 voltage difference wont do anything?
    Reply to xoVague
  3. No, it's fine. Bear in mind the CPU by default has power saving features that can change (reduce) the voltage a lot more than that, a 0.016V change is really nothing.
    Reply to Sakkura
  4. Your not going to damage your CPU at 1.21 volts and the jumping is not enough to even worry about. Running 4.8ghz on a 7700k at 1.21 volts is not crazy, but it is very good. Sounds like you are the winner in the silicon lottery.

    I have a 7700k and run it at 5ghz at 1.34 volts. For me, 1.35 is as high as I like to go, but mainly because of heating.

    I like to run Prime 95 for my stress test. It is hard on your CPU and if your OC is not stable, it will find out. I dont know what your cooling is on your system, but if you can hit 4.8 on 1.21 volts, you should be able to hit 5ghz with ease.
    Reply to feelinfroggy777
  5. feelinfroggy777 said:
    Your not going to damage your CPU at 1.21 volts and the jumping is not enough to even worry about. Running 4.8ghz on a 7700k at 1.21 volts is not crazy, but it is very good. Sounds like you are the winner in the silicon lottery.

    I have a 7700k and run it at 5ghz at 1.34 volts. For me, 1.35 is as high as I like to go, but mainly because of heating.

    I like to run Prime 95 for my stress test. It is hard on your CPU and if your OC is not stable, it will find out. I dont know what your cooling is on your system, but if you can hit 4.8 on 1.21 volts, you should be able to hit 5ghz with ease.


    im running a kraken x62 but I heard that prime is not recommended for testing as it can overheat your CPU, another thing is why am I not seeing 1.21 on the voltages? im only seeing 1.2 and 1.216
    Reply to xoVague
  6. xoVague said:
    feelinfroggy777 said:
    Your not going to damage your CPU at 1.21 volts and the jumping is not enough to even worry about. Running 4.8ghz on a 7700k at 1.21 volts is not crazy, but it is very good. Sounds like you are the winner in the silicon lottery.

    I have a 7700k and run it at 5ghz at 1.34 volts. For me, 1.35 is as high as I like to go, but mainly because of heating.

    I like to run Prime 95 for my stress test. It is hard on your CPU and if your OC is not stable, it will find out. I dont know what your cooling is on your system, but if you can hit 4.8 on 1.21 volts, you should be able to hit 5ghz with ease.


    im running a kraken x62 but I heard that prime is not recommended for testing as it can overheat your CPU, another thing is why am I not seeing 1.21 on the voltages? im only seeing 1.2 and 1.216


    Dont worry about the difference in voltage. You are looking at one hundredths of a point in voltage, power saving feature, windows power plan, or motherboard vrm can all have differences in supply of voltage to the CPU. Even the tolerance level of HW monitor will not be able to measure it that small.

    As for Prime 95, it will overheat your CPU if you overclock too high and dont have good cooling. But it is the ultimate stability test. If you decide to run it, just watch your temps. With a Kraken 62 and 1.21 volts you should not have a temp problem. I like to see my average temps under load below 80C.
    Reply to feelinfroggy777
  7. ALSO:
    I recommend not pushing a CPU right to the limit of instability. All electronic chips degrade, and being close could still mean it's going to periodically corrupt data.

    My general rule of thumb is 200MHz below point of failure as worst-case so if it failed at 4.9GHz drop to 4.7GHz and the appropriate voltage etc values for that.

    I prefer to aim for no more than 75degC in real-world, stressful situations (i.e. Handbrake, Blender at near 100% load) and I also test with Prime95 just as a stability test for the cooler and the CPU though it can go closer to 90degC depending on your setup.
    Reply to photonboy
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