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Discussion Starter · #1 · (Edited)
This thread is for sharing experience on the Z370 and Z390 platform and for support on all ASUS boards with these chipsets.
If requesting support, please try to use the following template (or at the very least have rig builder filled out):


  • Motherboard model:
  • UEFI Version:
  • CPU:
  • Memory kit part number (s) and amount in GB:
  • GPU:
  • SSD/HDDs/Optical drives:
  • PSU:
  • USB Devices (model/version number):
  • Monitor:
  • CPU Cooler:
  • PC CASE:
  • Operating system: Microsoft Activated yes/no?
  • Drivers Installed (include version):
  • Any third Party temp/voltage software installed:
  • System Overclocked (provide details)?



Z370 Boards:

ROG MAXIMUS X APEX
ROG STRIX Z370-E GAMING
ASUS PRIME Z370-A
ASUS ROG Maximus X Hero (Wi-Fi AC)
ROG STRIX Z370-I GAMING
ROG MAXIMUS X HERO
TUF Z370-PRO GAMING
TUF Z370-PLUS GAMING
ROG STRIX Z370-F GAMING
ROG STRIX Z370-H GAMING
PRIME Z370-P
ROG Maximus X Code
ROG Maximus X Formula

Z390 Boards (See the ASUS Website for more)



Prime Z390-A
Maximus Xi Hero (wifi)
ROG Strix Z390 Gaming-E
Maximus Xi Code
Maximus Xi Extreme


Nov 13, 2017: New Bioses: https://www.overclock.net/t/1640168...-official-support-thread/100_20#post_26446009
Nov 15, 2017: Bios Patches: https://www.overclock.net/t/1640168...-official-support-thread/120_20#post_26449686
Feb 8, 2018: Bios Test Builds addressing using negative offset with adaptive voltage (below VID): https://www.overclock.net/forum/26714769-post1352.html

ROG Maximus Apex Extreme OC


Coffee-Lake batch info via @aerotracks (in German)

Bios flashback for HeroWiFi: https://www.overclock.net/t/1640168...-official-support-thread/740_20#post_26527916
(correct name is M10Hwifi.cap)

TweakTown Coffee Lake OC Guide

My Coffee Lake Basic OC Guide (pdf download)



Intel specifies voltage limits in their Product Specification Sheets (PDFs). My experience is, running 1.52V vcore is much too high for watercooling, especially combined with transient load line overshoot (micro sec spikes). And as stated in the footnotes of the voltage tables, the 1.52V limit REQUIRES all other conditions are met. So, 1.52V may be "fine" if you never exceed the TDP and IAcc limits. Stick with low to mid 1.3V for 24/7 use.
 

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OC...D
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Discussion Starter · #2 ·
Reserved
 

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Will Raja be publishing an Edge Up article on overclocking Coffee Lake? Or should we just use the Kaby Lake guide?
 

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OC...D
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Discussion Starter · #4 ·
whoa.. had this up for less than 30 min. just a core OC.. nice XTU score!
ASUS Apex X, 8700K @4.7a4.5
 

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Is the Maximus X Hero (Wifi) a reliable well made motherboard? I always hear horror stories with asus rma and want to make sure i get a good board for my 8700K
 

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Discussion Starter · #6 ·
Quote:
Originally Posted by TMatzelle60 View Post

Is the Maximus X Hero (Wifi) a reliable well made motherboard? I always hear horror stories with asus rma and want to make sure i get a good board for my 8700K
Yes - it's a well made board. Lol, over a dozen ASUS boards in trhe past few years here.. not one broke - even with some stupid stuff being done to them.
 

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On the ROG STRIX Z370-I GAMING BIOS page, it lists the 0426 and 5426 versions both updated on 2017/10/20. What's the difference between the two? If I intend to manually OC the system, is one BIOS preferred over the other?

Edit - NVM, Raja answered this question on one of the ROG Forum threads. "The only difference between them is that the 5426 build has ASUS Multicore Enhance enabled by default. Identical otherwise."
 

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Discussion Starter · #10 ·
I'm really surprised by the responsiveness of this platform... z370 and an 8700K is really quick!
smile.gif


and .. real-time ram timing adjustment!
wheee.gif
 

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Motherboard model: Asus maximus hero x wi-fi
UEFI Version: 0505
CPU: Intel i5-8400
CPU Cooler: Corsair H100i v2

I've been runnig above system now just for few days.

I have been wondering really high (IMO) core VID values and thus high Vcore values with this 8400.

Straight out with default values asus MCE core VID and thus also Vcore goes up to 1.36 V when running prime. Disabling MCE and thus introducing power limiting those values drop to around 1.28 V.

These reading seem quite high compared to overcloked 8700k values.

I have only found one reference where to compare voltages i5-8400 should be running.
shows voltages below 1.2 when running MCE and all core and without those. Mobo they are running on video is Asus prime z370-a.

I guess i5-8400 can stand those voltages, but I would like to use this with "correct" voltages and no extra as they are not needed.
 

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Quote:
Originally Posted by Cirrus550 View Post

Motherboard model: Asus maximus hero x wi-fi
UEFI Version: 0505
CPU: Intel i5-8400
CPU Cooler: Corsair H100i v2

I've been runnig above system now just for few days.

I have been wondering really high (IMO) core VID values and thus high Vcore values with this 8400.

Straight out with default values asus MCE core VID and thus also Vcore goes up to 1.36 V when running prime. Disabling MCE and thus introducing power limiting those values drop to around 1.28 V.

These reading seem quite high compared to overcloked 8700k values.

I have only found one reference where to compare voltages i5-8400 should be running.
shows voltages below 1.2 when running MCE and all core and without those. Mobo they are running on video is Asus prime z370-a.

I guess i5-8400 can stand those voltages, but I would like to use this with "correct" voltages and no extra as they are not needed.
Hello

Each processor has a uniquely programmed VID table. To find the voltage programmed for your processor fully clear the BIOS, set MCE to disabled and LLC to Level 1. Do not change any other settings. The maximum voltage shown while under load will be the value Intel has programmed for that particular CPU. If you wish to use a lower voltage a manually entered negative offset will be required. The video you linked to also shows it is detrimental to performance to enable MCE when using a i5-8400 so I'm not sure why you want to enable it.
 

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Quote:
Originally Posted by Praz View Post

Hello

Each processor has a uniquely programmed VID table. To find the voltage programmed for your processor fully clear the BIOS, set MCE to disabled and LLC to Level 1. Do not change any other settings. The maximum voltage shown while under load will be the value Intel has programmed for that particular CPU. If you wish to use a lower voltage a manually entered negative offset will be required. The video you linked to also shows it is detrimental to performance to enable MCE when using a i5-8400 so I'm not sure why you want to enable it.
Hello and thanks for reply.

Basically this is the testing I have done. Except that LLC has been auto all the time.

I ran three test rounds just now. First LLC auto and the with LLC set to level 1. Both values in hwinfo the core VID went down about 0.09 V and Vcore same. For next test I set LLC back to auto and voltages stayed down. However I am fairly sure that value called Ring/LLC clock was 3.7 GHz at first run and after LLC 1 it went down to 3.5 GHz. And it was still 3.5 GHz when I set it back to auto.

Also current remedy for my running setup is exactly what you suggested. I have set -0.07 offset.

MCE itself does not raise voltages that I have noticed. VID request stays same and vcore stays same. It just removes power limit. This unit hits to power limits instantaneously with prime if MCE is disabled. Clocks drop to 3 GHz and voltage VID request and vcore drops.

Nonetheless I have MCE disabled and manually set 4095 powerlimits to keep 3.8 GHz under load.

I was not that familiar with concept of individual VIDs for units. Or the fact that there can be such huge difference. Maybe I'll just accept this and keep using the minus offset. System seems stable with even 0.1 minus offset.
 

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Hero X Wifi here with [email protected] 1.3v Gskill 4x8gb 3600cl16 1t, runs smooth as silk, this will be my daily use rig, Apex when they become available
Real time timing adjustments? , using memtweakit or is this Apex specific?
 

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Discussion Starter · #18 ·
Quote:
Originally Posted by Menthol View Post

Hero X Wifi here with [email protected] 1.3v Gskill 4x8gb 3600cl16 1t, runs smooth as silk, this will be my daily use rig, Apex when they become available
Real time timing adjustments? , using memtweakit or is this Apex specific?
It does run really smooth... I was hoping someone else would notice that. Very qquick and "clean".

[email protected]/4.4 --- 2x8GB GSkill 4400c19 @ 3866c16 vdimm 1.375V, SA 1.2, VCCIO 1.17 --- HCi 500%


Just a base to work from . Delidded the cpu last night, sealer dried over the day.. installed, temps now in the low 60s running RB2.54RC2 at 5.3 with 1.344V LLC 5 (load is 1.328V). Cache is still stock. I'm really liking this 6 core processor!
 

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Quote:
Originally Posted by Jpmboy View Post

Just a base to work from . Delidded the cpu last night, sealer dried over the day.. installed, temps now in the low 60s running RB2.54RC2 at 5.3 with 1.344V LLC 5 (load is 1.328V). Cache is still stock. I'm really liking this 6 core processor!
Very impressive clock/voltage numbers.
 

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Discussion Starter · #20 ·
Quote:
Originally Posted by done12many2 View Post

Very impressive clock/voltage numbers.
I think it's just average for the 8700K.
redface.gif
 
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