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i5-8600k+MSI z370 Tomahawk + Corsair Vengeance 2x4gb DDR4. How to OC?

Hi guys!

Given that setup, can someone help me about BIOS settings to a slight CPU overclock? I'm a bit lost in those tons of items...

Many thanks!
Reply to alessandroscagliusi
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More about 8600k msi z370 tomahawk corsair vengeance 2x4gb ddr4
  1. Best answer
    For CPU is easy, you only need to adjust vcore voltage and core speed.
    Try 1.3v and 4.8 GHz first, and play around. Use prime95 to check overclocking stability. Make sure temp under load is less than 85 degree.
    If not stable, either decrease clock speed or increase voltage. I recommend not exceeding 1.35v at first. What cooler do you have?
    Reply to vapour
  2. Thanks a lot!

    My cooler is ARCTIC Liquid Freezer 120
    Reply to alessandroscagliusi
  3. should allow you do very good overclocking.
    Reply to vapour
  4. vapour said:
    For CPU is easy, you only need to adjust vcore voltage and core speed.
    Try 1.3v and 4.8 GHz first, and play around. Use prime95 to check overclocking stability. Make sure temp under load is less than 85 degree.
    If not stable, either decrease clock speed or increase voltage. I recommend not exceeding 1.35v at first. What cooler do you have?


    This is my default setup:



    Then I enabled Game Boost and changed CPU BASE CLOCK to 104.77 MHz, in order to achieve 4.4 GHz (as stated in the top orange bar in this shot). Everything else left to AUTO.



    Rebooted, and, as you can see, I reached only 3.77 GHz. What am I missing??

    Reply to alessandroscagliusi
  5. Change the multiplier, not the BCLK.
    Also, change OC Explore mode to Expert, which should allow you to change the frequency on all cores. (Select all core mode)
    Then change the multiplier. 50=5.0Ghz.
    Reply to uuu100145j
  6. uuu100145j said:
    Change the multiplier, not the BCLK.
    Also, change OC Explore mode to Expert, which should allow you to change the frequency on all cores. (Select all core mode)
    Then change the multiplier. 50=5.0Ghz.


    Ok! I'll try it as soon as I'll be back home this night. Do you suggest leaving everything else to AUTO?

    Thanks
    Reply to alessandroscagliusi
  7. Leave everything else auto, except Vcore. Otherwise the mobo supplies WAY too much voltage (mine decided to give 1.456V at stock.)
    Try changing the multiplier up to 47 at 1.2Vcore. Then run a stress test. If it fails, reduce the clock to 46. (I assume you're only overclocking slightly, so you may not need to increase voltage past 1.2)
    If you feel daring, you can even increase the multiplier further. Don't worry about the PC crashing. I have a Z370 MSI board as well. If it crashes, it will just ask you to restore default settings.
    Reply to uuu100145j
  8. Solved! Thank you!
    Reply to alessandroscagliusi
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