Support for BCLK Overclocking of CPUs like i3-6100, Pentium G4400, i5-6400, i7-6700 and all other non-K CPUs.

Don’t use this for K-series CPUs.
It might damage your hardware, no guarantees provided.

Issues found so far

  • No IGPU
  • No dynamic change of CPU frequency
  • No C-states
  • No Turbo Mode
  • CPU temperature reading is incorrect
  • AVX instructions have very low performance
  • Windows XP ACPI not supported

After flashing set the following settings to make it boot into OS with correct CPU speed

AdvancedCPU Configuration
- Boot Performance Mode -> Turbo Performance

AdvancedCPU ConfigurationCPU Power Management Configuration
- Intel(R) SpeedStep(tm) -> Disabled
- CPU C states -> Disabled

Detailed ASUS Z170 Non-K OC Guide


If you have trouble flashing this BIOS (downgrade from newer version), use this guide:

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NameASUS Z170-P D3 Non-K OC BIOS
Size6.44 MB
Total Files1
Create DateJanuary 25, 2016
Last UpdatedOctober 22, 2016


  • Barrington Blowtorch

    I have significant problems getting any stable overclocks. OS won’t boot with as low as 105 BCLK and LLC lvl 7 and 1.375v. Maybe the DDR3 motherboards aren’t capable of such overclocks?

  • Alex

    I got no problems with this board. my i3 6100 run @ 4.44 ghz with 1,35v and ddr3 1920 @ 1.6 v blck 120 and disable all power save stuff and the igpu.

  • unclewebb

    Same here Alex. I also have a Core i3-6100 and the Asus Z170-P D3 overclocks just fine. You just need to follow directions and make sure that you are not using the Intel GPU and that SpeedStep and the C States are disabled. Overclocking the CPU will also overclock your memory so adjust your memory speed in the bios so it is running within spec.

    With the included Intel cooler, I have the BCLK at 116 MHz without any issues. 120 MHz was not Prime95 stable. It takes too much voltage but this might be OK if I decided to use something like the CoolerMaster Hyper 212 EVO.

    If you ever want to go back to a non-overclocking bios, no need to update from this bios. Just set everything to AUTO in the bios and then this bios (8002) will automatically switch back to normal mode where everything including the temperature sensors and C States, etc. all work fine.

    Simple overclocking, very stable system, low cost, highly recommended.

  • vul

    after installing this bios my user account got damaged under windows. Lost startup and had to use System Restore. The windows worked with this bios for 14 minutes and the next time I was able to boot to windows I got a Dos based 4 color screen error telling me I had and unofficial bios installed. And it never worked after. Bad luck?

  • Daniel

    bios flashed succesfully on my p-d3 thanks. trying the oc tomorrow with an i5 6500

    • Daniel

      I managed to reach a stable overclock @ 4.4 ghz 1.3V. A quick Prime95 test gave no errors, package temps stayed below 70 C.

  • Mohammed

    I can’t flash this bios it show me “selected file is not a proper Bios!”
    Please i want oc my cpu

  • Chris

    Hi there .Same message over here.Please help.I think I try every possible way to flash and no luck
    Please help.

  • oops21

    What about new BIOS 2002 from 2016/09/30? Is there any plans about making a MOD?

  • Murat

    I can’t flash this bios it show me “selected file is not a proper Bios!” with Z170-P-D3-ASUS-8002.
    we need help for new mod bios.

  • Murat

    thanks for new bios and windows flash programs.
    my i56400@4.2 ghz working 🙂

  • Mohammed

    thanks you i overclock my i5 6400 to 4.4 ghz with evo 212 cooler

  • Pete

    Got a 6500 to 4GHz and RAM at 3,000MHz stable at 1.35V, but I left the LLC at Auto because when I had it set to 7, it was a little unstable. Not overly interested in pushing further, but maybe ll get bored…

  • HarryH= Hodgson

    Im running my cpu at 4.5GHz, but in windows task manager it only shows as 3.17GHz, and benchmarks show what score i would get at stock even though other cpu programs (cpu-z) show me at 4.5GHz?

  • creolecaf

    Hi guys ! Please dont use UEFI Tool and Flash Programming Tool to flash from last 2002 official bios to 8002 overclock bios : It will beak your board just as I broke mine. Don’t know what happened but the tool did its job with no bugg or warnings. It ended normally the flash process but the fact is my board will not boot again. I just wanted to advise…

  • Dildo Baggins

    What’s with the October 22 update? Did you guys add Kaby Lake BCLK OC support?

  • May I know if this method and bios will work to OC skylake engineering sample? has anyone tried?

  • matros88

    How to Fix Double Start? If I change bclk The MoBo starts twice after a complete power off. (Cold Start).

  • Nelson

    Hi, I’ve made the update for bios 1010 only so I know it was for a bios for overclocking I tried to update the bios for 8001 for the prime z270 p the bios says it can not do update can help me

  • pedram

    I cant flash . show me (selected file not proper for bios)
    please help me

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