Non-K BCLK Overclocking for Coffee Lake on Z170 possible? Need to decide on a chip to buy for this mod

[Tiankay]

Ill try to cut it short. I am currently running a G4400 at 4.0 GHz on my ASRock Z170 Extreme4 because my 6600k died, and im in dire need of a new CPU right now. Maximum budget all in is around 150€ - Wich rules SKL and KBL out. I am not getting a dualcore or a low spec quad again...

The 2 options i have for upgrading are the i3-8350k (150€) quad or the i5-8400 (160€) hexa.

I already modded my BIOS to support the quad CFLand it still works, so theres that. Adding another microcode for the hexa isnt the problem The question is one that ive found contradictory info on. Will the non-k hexacore be able to BCLK overclock, or at least fix the multiplier to full boost clocks when installed on a modded ASRock Z170? The hexacore is only 10 bucks over the quad, but with 2.8 GHz base its not suitable for gaming. But its boost is at 4.0, so if I can run it at least there permanently I would be better off getting the i5-8400 for long term. Or will Turbo boost work at all? I am aware that additional steps like shorting 2 pins and a different MC are needed to get the hexa up and running, but it will only be worth the hassle it if i can get it to reasonable gaming clocks.

Peace
TK

[yosarianilives]

15 hours ago, Tiankay said:

Ill try to cut it short. I am currently running a G4400 at 4.0 GHz on my ASRock Z170 Extreme4 because my 6600k died, and im in dire need of a new CPU right now. Maximum budget all in is around 150€ - Wich rules SKL and KBL out. I am not getting a dualcore or a low spec quad again...

The 2 options i have for upgrading are the i3-8350k (150€) quad or the i5-8400 (160€) hexa.

I already modded my BIOS to support the quad CFLand it still works, so theres that. Adding another microcode for the hexa isnt the problem The question is one that ive found contradictory info on. Will the non-k hexacore be able to BCLK overclock, or at least fix the multiplier to full boost clocks when installed on a modded ASRock Z170? The hexacore is only 10 bucks over the quad, but with 2.8 GHz base its not suitable for gaming. But its boost is at 4.0, so if I can run it at least there permanently I would be better off getting the i5-8400 for long term. Or will Turbo boost work at all? I am aware that additional steps like shorting 2 pins and a different MC are needed to get the hexa up and running, but it will only be worth the hassle it if i can get it to reasonable gaming clocks.

Peace
TK

It was not possible with kaby lake chips on z170 so it should not be possible with cfl chips.

[Tiankay]

Well yeah, while it normally "shouldnt" work, i found results for the quads that it apparently does work for some. https://www.win-raid.com/t3483f16-Fixing-PCI-Express-for-Coffee-Lake-CPUs-on-Sky-Kaby-Lake-non-Asrock-and-some-new-Asrock-motherboards-3.html#msg49376

Its confusing.

 

But anyway: Even if we ignore BCLK OC - some Boards like mine do have a feature called "multi core enhancement" where they force the max single core boost clock onto all cores. And that actually did work for Kaby Lake afaik. My thought was: If the mod doesnt screw turbo boost functionality over , it should be possible to have it run at 4.0 with this feature enabled - Wich would be fine by me. But I dont know if turbo boost still works with a modded BIOS?

 

Peace

TK

Edited May 14, 2018 by Tiankay