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Maximus VIII Hero, i5-6600K OC with Adaptive voltage

The_F34R_Channe
Level 7
Firstly, my current OC was accomplished by just these settings:

1 to 4 core ratio: 45
Min. CPU Cache ratio: 41
Max CPU Cache ratio: 41
CPU Core/Cache voltage: Manual
- CPU Core Voltage Override: 1.185v (maybe not enough?)
Maximus Tweak: Mode 1 (did this automatically, unsure what it entails)
CPU Load-line Calibration: Level 5

Before I start this new journey I will gather some basic information here. I would like to OC with Adaptive voltage and have SpeedStep and C-states enabled.

What will I need to tweak, why and when? I see people having changed PCH voltage as well, for example.

I would start by setting 1.350v or 1.375v in the Adaptive voltage area with a 46 MP, cache at 41 or 42, LLC 5 and take it from there: lower the voltage until it doesn't boot. A good temperature is what I'll be looking for.

It's my understanding that Adaptive voltage changes the volts depending on clock speed within a set range?
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64
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The F34R Channel wrote:
I meant down to a thousandth by the way. Yours and that of others didn't seem to fluctuate? I don't expect LLC to stabilise it this case.

So would that mean that 1.290 is my voltage, and can I set that in adaptive without the +0.01/0.02? It's really stable, did and additional 4 hours of RealBench, hours of games, and all it does it go down to 1.280, temps are max 50C in gaming, 55-57C while stress testing.

Did you ever do something to the cache? I'm now tempted to leave it on auto.


I run Cache at stock.

Chino wrote:
I run Cache at stock.


Awesome, thanks! I'll leave mine on auto too, it's not like I'm running 4000MHz+ RAM, in which case having a higher cache clock might help.

Since mine is 5hrs RealBench plus 10+hrs gaming stable on 4.6GHz with 1.290v I'll make that the adaptive voltage, I don't think there's the need for an additional 0.01/0.02v - but correct me if I'm wrong! I'll also leave the LLC on auto, as I think it won't change much for me? How do I determine how Vdroop I have? I could always try 5 and see how the voltage behaves whilst running RealBench.
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64

The_F34R_Channe
Level 7
With my previous OC I used level 5 as well, 3 and 4 made the voltage very jumpy. So level 5 an retest RealBench? That only leaves setting and additional 0.01 or 0.02v or not in adaptive, like in the guide.
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64

EasyLover
Level 8
Level 5 is good to go. Try it.
Live your life the way you want, not the way others want!

The_F34R_Channe
Level 7
I'll do this before RealBench:

- set 1.290v adaptive
- LLC 5

Or I'll just say meh and only do point one lol
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64

The F34R Channel wrote:
I'll do this before RealBench:

- set 1.290v adaptive
- LLC 5

Or I'll just say meh and only do point one lol


I'll set the VCore to Adaptive once I've determined the sweet spot of my max and stable overclock 😉
Live your life the way you want, not the way others want!

Janne-71
Level 7
I have also 4.6ghz at 1.28v adaptive, today i tried 4.7 with 1.37 but it still wasn't enough to keep it stable. Might just leave it to 4.6, not much difference anyway.

The_F34R_Channe
Level 7
@ Janne: Yeah I'd leave it as it is; you'll need too much additional voltage for that extra 100.

Something interesting happened with 1.290v adaptive; after 15 mins of RealBench the PC rebooted, whilst having said voltage at manual is rock solid. What do you make of this? Trying 1.300v now.
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64

Janne-71
Level 7
Im not sure if you really have to do realbench with adaptive on, i just did it with manual 1.28 then switched to adaptive 1.29. Atleast i haven't have any problems with real usage, games etc. I think i did realbench with adaptive 4.5 but never with 4.6, manual was enough. In chinos manual realbench is done only with manual voltage.

The_F34R_Channe
Level 7
You make a fair point. My logic here was that if it's stable at adaptive, it should be stable in RealBench as well.

And it was on a 30 minute run, 1.300v adaptive BIOS, 1.264v HWMonitor/CPU-Z.
Asus Z370 Maximus X Hero | Intel Core i7-8700K 4.7GHz | Corsair H105 | G.Skill Trident Z 3333MHz CL16 16GB | Asus GTX 1080 Strix | EVGA SuperNOVA 850 P2 | Crucial MX200 500 GB | 760T | Acer XB270HU 1440p | Windows 10 Pro x64