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Severe VCCIO voltage drop of my Maximus XI Gene

alxanderman
Level 7

‎11-15-2018 05:31 PM - last edited on ‎03-06-2024 07:46 PM by Community Admin

Hi all, I found my Maximus XI Gene motherboard (BIOS version 0602) gets a serious VCCIO voltage drop when I try to fix the value of VCCIO in BIOS.

For example, when I set VCCIO as 1.25V, the BIOS shows 1.168V after saving changes; 1.4V for 1.248V, etc. It makes me difficult to overclock memory.

Is the problem due to the BIOS, my board, PSU, power cables or anything else?
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Phillyflyer
Level 10

‎11-15-2018 08:00 PM

alxanderman wrote:
Hi all, I found my Maximus XI Gene motherboard (BIOS version 0602) gets a serious VCCIO voltage drop when I try to fix the value of VCCIO in BIOS.

For example, when I set VCCIO as 1.25V, the BIOS shows 1.168V after saving changes; 1.4V for 1.248V, etc. It makes me difficult to overclock memory.

Is the problem due to the BIOS, my board, PSU, power cables or anything else?


Quick question...does this also happen with XMP enabled and SA /IO left on auto ??
Asus ROG Maximus XI EXTREME
Intel i7 9900K OC'D @ 5.2 GHZ @ 1.345V (1.296V LOAD) LLC 6 PRIME 95 STABLE 8 HRS
XSPC RX360 Rad (6)Scythe Gentle Typhoon 1850 RPM Fans In Push/Pull @ 1500 RPMS
Swiftech Drive II / Swiftech MCP35X Pump
Enermax Platimax 1200 Watt Power Supply
32GB G.Skill F4-3866C18Q-32GTZR 3866 MHZ CL18 1.35V (OC 4266MHZ 17-18-18-41-2T @1.45V)
MSI GTX 1070 SEA HAWK EK X SLI WITH ASUS HB RGB
(5)Samsung 840 Pro 128 GB In Raid 0
(2) WD 1TB Black Edition
Corsair 900 D
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alxanderman
Level 7
In response to Phillyflyer

‎11-15-2018 11:11 PM

Phillyflyer wrote:
Quick question...does this also happen with XMP enabled and SA /IO left on auto ??


I'll test it when I'm back home
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nickolp1974
Level 10

‎11-15-2018 10:19 PM

alxanderman wrote:
Hi all, I found my Maximus XI Gene motherboard (BIOS version 0602) gets a serious VCCIO voltage drop when I try to fix the value of VCCIO in BIOS.

For example, when I set VCCIO as 1.25V, the BIOS shows 1.168V after saving changes; 1.4V for 1.248V, etc. It makes me difficult to overclock memory.

Is the problem due to the BIOS, my board, PSU, power cables or anything else?


I'll have a look at this with mine later. I had instability issues with said 0602 bios and have since reverted back to the original shipping bios 0401 which I have no problems with whatsoever.
i9 9900K, ROG Gene XI, G.Skill 4266 and one big bucket!
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HiVizMan
Level 40

‎11-16-2018 12:45 AM

And please do list your bios version too.
To help us help you - please provide as much information about your system and the problem as possible.
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Arne_Saknussemm
Level 40

‎11-16-2018 12:54 AM

alxanderman wrote:
(BIOS version 0602)


HiVizMan wrote:
And please do list your bios version too.


77021

*hides in a cave*
ARNE’S GUIDE TO PC BUILDING HAPPINESS

ARNE'S GUIDE TO OVERCLOCKING HAPPINESS
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HiVizMan
Level 40
In response to Arne_Saknussemm

‎11-16-2018 05:02 AM

Arne Saknussemm wrote:
77021

*hides in a cave*




Darn thanks Arne.

Apologies to OP my bad. Need more coffee in mornings that is for sure.
To help us help you - please provide as much information about your system and the problem as possible.

alxanderman
Level 7
In response to HiVizMan

‎11-16-2018 05:16 AM

HiVizMan wrote:
Darn thanks Arne.

Apologies to OP my bad. Need more coffee in mornings that is for sure.


Don't worry. 😄
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alxanderman
Level 7

‎11-16-2018 05:01 AM

I reverted BIOS settings as default, then enabled XMP I, left VCCIO and VCCSA as auto, and I saw the VCCIO was 1.15V

Then I set the VCCIO as 1.2V, I got 1.072V after saving changes; 1.3V for 1.152V; 1.35V for 1.2V.

After downgrading the BIOS to v0506, I repeated the same actions, but got the same results. I finally set the VCCIO as 1.4V, then I got 1.25V. That's mean there is always a 0.15V voltage drop between the setting and the actual value.

Guys, any clues?

770287702977030770317703277033
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HiVizMan
Level 40

‎11-16-2018 05:46 AM

Ok now to focus on your question. The only really accurate way to measure voltage across any points is with a mulitmeter. The sensors used by different software, and that includes own brand software are not always going to be accurate. They will be darn close most of the time. But the point I am trying to make I would not worry about that vdroop. Especially as it is a constant amount. That variation may simply be difference in polling of the sensor versus what you key in as the target value.

If your memory is doing what you want, in the way that you want it to do and is stable then all is good.
To help us help you - please provide as much information about your system and the problem as possible.
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