ASUS Z170 Pro Gaming Non-K OC BIOS

ASUS Z170 Pro Gaming Non-K OC BIOS

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:

NameASUS Z170 Pro Gaming Non-K OC BIOS
Size6.50 MB
Total Files1
Create DateDecember 19, 2015
Last UpdatedOctober 22, 2016


  • ingopan

    where have u got the 1301 from? on asus site its still 1102. just wondering here. nice job!

    • der8auer

      “sources” 😀

      • ingopan

        works nice. set llc to 7, bclk to 135 and booting fine. is more possible with standard cooler? any guide out there for z170? thanks in advance.

      • Stefan


        i have a Asus Z170 Pro Gaming and an i5 6400.
        i updated the bios with the mentioned one on this page, but i cannot see the “extreme tweaker” i still have the AI tweaker and im missing the Boot Performance Mode -> Turbo Performance. this one is not showing to me.

        i tried this 2 times…no success. PC is not booting up and i cannot go stable with him.

        also, do i need to set the jumper on the motherboard to over voltage position pin 2-3? now it is set on pin 1-2.


        • Dr. O'Kitteh

          according to the screenshot you’ve provided, you still have a standard ASUS BIOS 1104 dated this January.
          The BIOS-related fields in CPU-Z should state the following for the current version of Non-K OC
          Version: 1301
          Date: 12/18/2015

          I also have Asus Z170 Pro Gaming and it’s running at 140 MHz bus speed at the moment.

          I wasn’t able to find the mentioned menu item “Boot performance mode”in its’ place below the Cache Line Prefetch, nor anywhere on the Advanced page (or other pages).

          Anyway, I’ve spent a couple of hours trying to find an explanation of the missing item, and after finding none, just overclocked my i5 6400 without Turbo Performance.

          According to CPU-Z Multiplier stays at 27, not 33 as it supposed to be in Turbo mode, and the core speed is around 3780 MHz.
          It’s enough for me (for now).

          • Stefan

            Hello O’Kitteh,

            I took the screenshot after i turned to the original bios. i posted it just as a confirmation for the MB i use.
            Myself i checked every tab there for that option. i still cannot make it boot.
            can you make a youtube video of the settings you have, maybe im doing something wrong.
            or i’ll just wait for der8auer, he said he will test in a couple of days this type of mb and i5

        • Dr. O'Kitteh

          There’s a link above called “Detailed ASUS Z170 Non-K OC Guide”. I’ve used most of the hints written there, and I also watched two or three videos on Youtube related to non-K CPU’s overclocking just to get an idea of what different people do.
          I’ve opted for a mild usage of LLC (lesser than in the formentioned article) because my OC is less extreme and I don’t want any extra heat. I also kept CPU core voltage below 1.3 V even while on full-load by Prime95.
          As for memory modules, I upped their voltage just a litlle above 1.2V and kept them within their specs on frequency and timings.
          The memory modules, btw, are from the motherboard’s compatibility table and have an XMP profile. I’ve an impression from what I’ve read on the internet this mobo is very picky about the memory you install.

          Also, I presume you do have a dedicated Video board and you loaded Default settings after installing new BIOS.
          As for the overvoltage jumper, my answer would be Don’t touch it! Like ever 🙂

    • Murad

      Please tell me, on this motherboard the i5 processor 6400 to how many MHz can I overclock with air cooling (e.g., CPU fan arctic i30 or i32, Cooler Master Hyper 412S, Thermaltake Contac 21) ? Thanks!

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  • paddy

    any chance the z170i pro gaming mitx will get a bios update?

  • anit

    will it work with i5 6500?

  • castro

    I allso have have the AI tweaker and im missing the Boot Performance Mode -> Turbo Performance after flashing to 1301???

  • castro

    I have ASUS Z170 Pro Gaming and G4400.

  • castro

    I have integrated graphics, is this a problem? Do I need dedicated graphics card?

  • Dominik

    Still no update to make it work for the people who got problems? :/
    Having AI Tweaker instead of Extreme Tweaker and im missing the Boot Performance Mode -> Turbo Performance after flashing.

    • Dr. O'Kitteh

      Dominik, you don’t need to have “Extreme Tweaker” and ” Boot Performance Mode” menu items to overclock this mobo. This part of the descriprion was just mindlessly copy-pasted from one for a different motherboard (probably Maximus series). More importantly the system starts working at high BCLK settings. Mine is at 150 MHz ATM, while with standard BIOS it wouldn’t go above 104 MHz.
      I also hope they fix the issue with not having turbo mode multiplier enabled, but it works OK even without it, it’s just you don’t see the right resulting CPU clock while settings BCLK in the BIOS.

  • Antonio

    when there is a new BIOS 2016? others already have

  • asd

    Any chance for a new upgraded bios ?

  • Dan

    Hey der8auer

    Just checking in to let you know there is still interest for a new BIOS. I know you don’t have control over all the factors, so I am not trying to pester asking for an update. But just a hello and a big thank you for the work you have done. I got my Z170 Pro Gaming and I5 6500 months ago, and have had a lot of fun tweaking. I did not plan on an OC, but I knew there was talk about being able to do so on non-K versions. After I got my rig running, I found your postings and help, and let me tell you, awesome! I really should just get a 6600K, but I love the tweaking and tinkering. I am coming from a DFI DK P35 T2RS with an E4500 (My worst intel chip!), an E8400 (LOVED THIS ONE!) and a Q9450 (3.8 24/7 stable for the past god knows how many years.) So a big Thank you! And if there is any updates, I am checking in every couple weeks!

  • bur

    whether the update?

  • bur

    whether the update? I have a version of the 1805 and 1301 does not set

  • bur

    I can not disperse i5-6600. bios v.1301

  • LeaFy

    Hi guys
    It was working for me for some time then I had overclocking failed error so I installed the original bios version 1805 and I want to go back to 1301 but I can’t update it, because it says that it’s not bios file or something. Same thing while I’m trying to install older asus bios version. Any ideas?

  • Tom Nguye

    Hey guys! Ws wondering if anyone could help me on how to flash the bios if the EzFlash Utility says that the bios is not a proper bios file. Did Asus shut down the non k oc and should i move the jumper on my mobo? Please reply soon and thanks! 🙂

  • Z170

    Hi der8auer, 1301 bioses works, but (!) noticed that FCLK (400Mhz / 800Mhz / 1Ghz) is not working
    AIDA64 reports System Agent Clock at 1000Mhz even on non-clocked CPU & even if I set 400 or 800 in bios menu…
    Any guess why or bios update to Asus boards?

    able to raise BCLK to 120 on G4400 but (!) FCLK raised as well to 1200Mhz (!) reported by AIDA64
    BiosModders we’r in need of new updated bioses or customization of newer versions from Asus official-bioses 😉

  • TC

    Hi, we asus z170 Pro Gaming owners need realy a new OC Bios. We can no more downgrad the 1301 Bios. Pleas BiosModders
    can you make a new OC Bios for us?

    Thank you so much 🙂

  • Murad

    Please tell me, on this motherboard the i5 processor 6400 to how many MHz can I overclock with air cooling (e.g., CPU fan arctic i30 or i32, Cooler Master Hyper 412S, Thermaltake Contac 21) ? Thanks!

    • I have it running at 4200mhz with EVO212. Stable and not too hot. I’d try 4500mhz, but didn’t find time yet to test it out.

      • Murad

        And what is there to check??? just increase the BLCK up to 170-178Mhz. Or am I missing something???

        • First you have to follow to set up all settings as described there and then just increase BCLK. Start with 140 and then boot, test, watch temperature, restart, increase BCLK, boot, test, watch temperature. Until you find the most stable BCLK for your case. Mine works fine with BCLK 150. Since it’s enough for me I just stopped at 150.

          • Murad

            Ok. Thank you. I chose the processor core i5 6400 and motherboard asus z170 pro gaming, I need to do is choose the cpu coller fan (only air coolling) and the RAM. fan need at least 27 to 29 decibels noise level in the load, only to be well cooled. a memory of 32 gigabytes. Here’s the question – better for overclocking 2 to 16 GB or 4 to 8 GB???

          • It doesn’t matter how much RAM you have for overclocking. But I recommend to have at least 8GB nowadays. I have 16GB, just because supplier didn’t have 8GB kit when I was upgrading my PC. I’d suggest you to buy EVO 212 cooler, it’s cheap and very quiet and reliable.

          • Murad

            I want to purchase RAM for the future, not to return to this issue more. But I also need low latency. min timing. But, as far as I know, in games does not add fps high memory frequency. Had a lot of tests for this reason. DDR4 is sometimes even inferior to DDR3. But the timings can add 2-3 fps only

            About “Cooler Master”, I can say that I use “Cooler Master V8” for 8 years now – since 2008. A great cooler. Quiet, efficient. if Evo 212 such wives, then that’s fine

          • Then go with at least 16GB if you’re looking into the future. I did buy Kingston FuryX just because it was the one available at the store CL12 RAM (Kingston HyperX Savage Memory Black DDR4 2x8GB, 2400MHz, DIMM, CL12). If you’re going to use your PC for gaming only 16GB is enough for at least following 5 years. Regarding cooler, you can go with liquid cooling if you have enough budget for that. I didn’t go with liquid as I didn’t want to invest too much.

          • Murad

            I also don’t want to invest a lot. But the memory I put a 32 GB, since we have a small difference between 16 and 32GB in price. I also stop air cooling. I just used the motherboard Asus ROG socket LGA 775 chipset Х48 Rampage Extreme with an Intel Core 2 Quad Q9550, video card Asus Engtx295 since 2008 (+ memory 4gb OCZ with timings of 7-7-7-24 + power supply OCZ 700 watt – this firm for a long time does not produce memory elements and a power supply. a great producer). Everything worked like clockwork and now it works. Then it was a good time, and now marketers are running everything. I believe it is always necessary to choose a good manufacturer, it is possible to overpay. And always processor to choose – Intel and graphics cards from nvidia. Always. And then the head ache will not be. Well, while we wait for Core I5 7xxx and I7 7xxx , chipset Z270, GTX 20xx…

  • Murad

    I have a PC with processor core 2 quad 9550 overclocked to 4.1 GHz. Is it worth to change existing and running for 8 years (2015 to replace all thermopaste and thermal seals, and lubrication of all valves or grease lubrication) core 2 Quad 9550 (overclock a 4.1 GHz) on mother Board ASUS Rog Х48 LGA775 rampage Extreme + DDR3 8GB core i5 6400 and overclock to 4.6 GHz, especially for gaming tasks. If you change the CPU, mother Board and memory. (The video does not change – ASUS STRIX-GTX1060-6G-series ROG). In this videocard, FPS on max options in World of Tanks – 100-120, World of Warships- 45-60-70 fps. Is there any sense to change core 2 Quad 9550 (4,1 GHz) core i5 6400 (4.6 GHz)????? Very thanks for all you!!!!

  • Andy

    Due to newer version of Bios flashed in the motherboard EzFlash Utility do not accept this BIOS file. Can you make a new OC Bios for easy update?

  • bur

    Yes, very much needed new version 🙁

  • Urbech

    Hi, der8auer!
    Anyone going to put here the BIOS that will fix a bug of no “extreme Tweaker” and “load mode -> Turbo Performance”???
    just on version 1301 BIOS turns out to overclock the processor core i5 6400 only up to stable 4.5 GHz, next is instability

  • Ryan Slattery

    Does this BIOS work with the Gaming Pro/AURA, although the boards look virtually identical, will it still work?

    Thanks 🙂

  • Enzo

    do this BIOS work on my ASUS Z170 PRO Gaming AURA mobo? Asus EZ update III says that this is not pro proper BIOS…

  • Mickaël James Jr

    Hello ^^

    I’m still stuck with ASUS Z170 PRO GAMING and i3 6100… pls admin can you just update this version of bios pls. The mobo doesn’t want to flashback :'( I have already followed the tutorial to flash back old bios but it doesn’t work… error 368 : bios space. Please !!! 🙂 Thank you

  • Aristotle Daphrick

    Will this work with the z170 pro gaming aura?

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  • panos

    I have stable OC i5 6600 non k at 4.5 GHZ but my cpu core voltage is 1.505 . Is that to high?My temps when gaming go at 70-78 c and idle at 36-45.Thanks

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