I7 8086k overclocking issues

[svenhassel]

Hello, my name is Aleksanander Stojnsek, and i'm from Slovenia (that’s why my english is not perfect). In december 2018 i bought my new cpu i7 8086K, i pick this cpu instead of cheaper i7 8700K, because i want to avoid silicon lottery, and get the cpu that can hit 5ghz on al cores, with lower voltage. Few days ago, i finally decide to overclock my new cpu, and see what is capable, the final result was huge disapontmant. I saw some i7 8086K hitting 5.1 Ghz with 1.3 voltage, and even the vorst samples can hit 5 Ghz with 1.3 voltage, but my sample its not stable at this voltage, i try 1.33 voltage (because of high temperatures, i didn’t go higher) for 5 Ghz and  it’s still not stable. I pay 500 € for cpu that can’t hit 5 Ghz with resonable voltage, i could get i7 8700K for 100 € less and I would probaly see better results. Some i7 8086K can hit 5 Ghz with 1.2 Volts but mine can’t even hit 5Ghz with 1.33 Volts (I need 1.3 Volts to get 4.9 Ghz stable, so I will probaly need at least 1.35 Volts to get 5 Ghz stable, that’s just to much for a i7 8086K), i think I get defective sample (average 8700K that was not even binned properly). I realy don’t know what should I do.

 

Edit: Im using ROG STRIX Z370-G GAMING (WI-FI AC) with updated bios.

[Fasauceome]

Gonna be completely honest, it's a bit of a gimmick. Overclocking is never guaranteed, there's always silicon lottery. However, have you tried load line calibration yet?

[svenhassel]

I follow this guide, so i set load line calibration to 6

[Brooksie359]

Yeah getting an 8086k doesn't mean you will get a great overclocking chip but rather one that can reach the required base and boost clocks if the 8086k. I always thought it was weird that people would assume this. Anyways you could have just turned MCE if you wanted 5ghz on all cores. The temps issues seems like you just don't have enough cooling to overclock properly. 

[Jurrunio]

Yeah that 5GHz advertised by Intel is just the single core turbo, other parameters are the same as 8700k. You really should have asked here before buying the 8086k.

[Snipergod87]

Overclocking is random luck with the CPU, sounds like you didn't get a winner.

[svenhassel]

8086 should hit 5ghz with 1.3 volts (some samples hit 5.1 with that voltage).

For colling im using Intel Thermal Solution TS13X (BXTS13X), im waiting for evga clc 280

[svenhassel]

How can be my sample so much worse?

 

https://www.gamersnexus.net/guides/3343-binning-a-cpu-volt-frequency-intel-i7-8086k

 

 

Speed/Model	Core i7-8086K	Core i7-8700K
4.6GHz	1.2V/73°C	1.2V/74°C
4.8GHz	1.2V/ 77°C	1.225V/80°C
5.0GHz	1.275V/87°C	1.325V/98°C
5.1GHz	1.325V/98°C	Overheat

[Tristerin]

3 minutes ago, svenhassel said:

8086 should hit 5ghz with 1.3 volts (some samples hit 5.1 with that voltage).

For colling im using Intel Thermal Solution TS13X (BXTS13X), im waiting for evga clc 280

*should* being the key word.

 

I cant overclock my FX 8350 for ****.  Most people can get it to 4.6 - 4.8 OC, with some getting 5.0ghz.  Me?  4.4ghz and it cant even stress test without locking up PC.  I gave up because it just...wouldn't...take an overclock well. 

1 minute ago, svenhassel said:

How can be my sample so much worse?

 

https://www.gamersnexus.net/guides/3343-binning-a-cpu-volt-frequency-intel-i7-8086k

 

 

Speed/Model	Core i7-8086K	Core i7-8700K
4.6GHz	1.2V/73°C	1.2V/74°C
4.8GHz	1.2V/ 77°C	1.225V/80°C
5.0GHz	1.275V/87°C	1.325V/98°C
5.1GHz	1.325V/98°C	Overheat

 

Worse?  Does it run at the advertised speeds it was sold to you as?  Than its working as intended.  You cant guarantee an overclock, like everyone else said.

[svenhassel]

I read all rewiews (amazon, newegg, geizhals...) and i couldn't found a sample that overclock so bad like mine, looks like i get the worse i7 the worst sample.

[GMart84]

I am going to be completely honest as a fellow owner of the 8086K and an 8700K they overclock about the same.  My 8086K can boot and run games at 5.2 @ 1.36 vcore with no offset and my 8700K can boot and run games at 5.1 with about that vcore too.  They are the same processor essentially also, double check that you have turned off Multi Core Enhancement.

 

Silicon Lottery actually told me after delidding my CPU that I would require 1.412 vcore to get 5.1 on the 8700K and 1.410 vcore to get 5.1 on the 8086K both stress test stable.  So essentially the same thing.

[svenhassel]

I can also boot and run games with 1.28 voltage on 5 Ghz, but i cant past OCCT test even with 1.33 volts.

[GMart84]

@svenhassel Since not all processors are the same, that guide you used may need to be tweaked a bit in order to make it work for you.  Intel datasheet says that 1.52 vCore is the maximum that the CPU can handle.

 

https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/8th-gen-core-family-datasheet-vol-1.pdf

 

Page 123 if you are looking for it.

 

I am wondering why you are so concerned with going above the 1.30 vCore.  If your cooling solution keeps the CPU below Tj Max by a decent amount then why are you specifically worried about it.  When I benchmark using my PC I push my overclock up to 5.35 Ghz @ 1.49 vCore and the temps never go above 89° C.  Yes I know that the higher voltage COULD potentially decrease the lifespan of my processor, however I am not using that for a 24/7 overclock.  Silicon Lottery even shows that on their Delidded CPUs you needed to use between 1.4-1.425 vCore.  I got a bad chip too, but I was getting 5.1 Ghz non-delidded @ 1.36 vCore and it was getting to that same 89° C.

 

I have not watched the guide you used, however things to make sure, Multi-Core Enhancement is off, Short and Long Duration Power Settings are at 4095.

[svenhassel]

Higer voltage higher temps, difrence between 1.3 and 1.4 volts is 15-20 °C.

I gues i will just use 4.9 Ghz with 1.3 volts, thanks for your help.

 

[Asryan]

Hello I finally managed to pass an OCCT without error

1 hour test, large files, avx 2

8086k processor

Aorus Master Z390

vcore 1.33

Turbo LLC

Are these results ok? For some people it seems they are average and for other I spoke about it they are very bad for this chip

 

8086k Aorus Master Z390

 

disabled c state and speed shift

 

I would like to set up an adaptive profile but not so sure how to do..

Also should I leave c state and speed shift enabled? 

Thanks

For the full settings :

MANUAL PROFILE

ADVANCED FREQUENCY SETTINGS

CPU Base clock 100

CPU upgrade : auto

Enhanced multi core performance : disabled
CPUclock ratio 50

FCLK frequency for early power on : 1Ghz

XMP : profile 1

Vt-d disabled

Advanced cpu core settings

AVX offset : 0

Uncore ratio : auto

Intel turbo boost technology : on

Cores : 50 all cores

C state : disables
SpeedShift : disabled

ADVANCED VOLTAGE SETTINGS

Advanced power settings

CPU internal AC/ DC Load Lines : auto 

CPU VCORELoadline calibration turbo

CPU vcore current protection : auto

Manual 

CPU vcore : 1.325

VCCIO 1.15

CPU SA : 1.15

CPU current limit 255

All other power limit maxed 

[Mister Woof]

so speaking from experience

 

while it sucks you can't get 5ghz

 

4.9ghz is imperceptible from 5ghz in actual use