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1.557v ASUS - ROG STRIX Z790-E GAMING WIFI new bios(High Voltage Concern)

ManCaveMike
Level 10

My motherboard is the ASUS - ROG STRIX Z790-E GAMING WIFI (Socket LGA 1700) Intel Z790 ATX DDR5 Wi-Fi 6E Motherboard  and everything is at stock value except I am DRAM Frequency set to 6000mhz for my ram.

 

CPU is 14900K with Corsair H150i Elite LCD XT

 

R23 score was 33k

 

ManCaveMike_0-1733663214103.png

Does my Voltage look normal?

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39 REPLIES 39

and here is the  cpu on  default settings.

 

Path of Exile 2024 RTX 4080 14900K Default settings test 4k

 

Notice the FPS is nearly identical to the one with IA VR 1423 but the heat is 20 to 30c hotter on default.

Full system

 

i9 14900k

rtx 4080

64gb ddr5 ram

3tb nvme

h150i elite lcd xt

z790 rog strix gaming e

850 w corsair rme psu

and I have a cpu bracket as well.

My biggest concern if I dont mess up the cpu by setting the IA VR to 1423 as I dont usually play with bios and just run the cpu as is out of box not touching anything but xmp.  But this PC doubles as a space heater on default lol

ManCaveMike
Level 10

ManCaveMike_0-1733712742038.png

Ok restarted here are the default settings before I run any tests.  

Nate152
Moderator

Thank you

64GB CL32 is a pretty aggressive memory kit, the instability is coming from the cpu's memory controller.

You're only 400MHz shy of hitting the rated specs so it might be doable.

There are five voltages that will help stabilize your memory.

1) Dram VDD voltage.

2) Dram VDDQ voltage.

3) CPU System Agent voltage.

4) IVR Transmitter VDDQ voltage.

5) Memory Controller voltage.

So, I see for your memory kit, XMP sets VDD and VDDQ voltages to 1.40v. You can take these voltages a little higher, some of the faster memory kits set these voltages to 1.45v. You will have to enable high Dram voltage mode to go higher than 1.435v.

So here is what I would try to get 6400MHz stable.

1) Enable X.M.P.

2) Dram VDD voltage - 1.45v.

3) Dram VDDQ voltage - 1.45.

4) CPU System Agent voltage - 1.32v.

At the bottom of the Ai Tweaker page, click Advanced Memory voltages.

5) IVR Transmitter VDDQ voltage - 1.40v.

6) Memory Controller voltage - 1.40v.

7) F10 and Enter to save and exit.

If it boots, great. If not, more voltage tuning will be needed.

To give you an idea, I'm using 16GB (2x8GB) Kingston Fury Beast 6000MHz CL40. I have it overclocked to 6200MHz CL36.

HWinfo shows the five voltages I listed above.

IMC VDD = Memory Controller voltage

CPU VCCSA = CPU System Agent voltage

VDDQ TX voltage = IVR Transmitter VDDQ voltage

dram voltages.png

 

 

 

 

 

I really dont want to mess with the memory anymore.  It is literally a 30 minute recovery job everytime the pc doesnt boot.  I am more than happy to run it at 6000mhz,  But the next time I want to stress myself out I will definitely try this lol.

 

 

My biggest issue is making sure my voltage is fine(All the stories of the 14900K issues I want to minimize any issues and also minimize how much bios I am tweaking.

 

ManCaveMike_0-1733714224745.png

 

 

I noticed that the core vid seems to be higher when watching youtube or checking emails than gaming.

20241208_205413.jpg

This is the settings I changed from auto to 1423 and seems to have lost me zero performance other than a few hundred points in R23 test but I am running lower voltage and less heat for no noticeable difference in gaming.

So I think I will just run this, and hope for the best.

Nate152
Moderator

I see in the bios release notes for bios version 2703 that it has the Intel microcode 0x12B to address elevated voltage requests at idle or light activity, which is what you're seeing with the VID voltage.

Try updating to bios 2703 or the latest which is 2801, see how the CPU VID voltage looks after updating the bios.

ROG STRIX Z790-E GAMING WIFI | Gaming motherboards|ROG - Republic of Gamers|ROG Global

If you have any questions about updating or need help with it, just say so. 

 

 

 

 

 

 

I am running 2801.  I updated from 2703 to 2801 and didnt see any real difference.  My cpu is just under a month old,  On default R23 score is only 33 to 34k

On my ia vr its 32

Changing Svid to typical killed my score to 20k

You need to disable CEP.

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090

Can you explain that more please?  I have no experience with over clocking or undervolting and am used to running the cpu on stock settings.  I found 2 CEP and it says disabling it can improve performance by increase temps.

I am trying to not increase my temps.

Your initial question is about voltage, even though your voltages are fine for stock. The thread should ideally have ended there. 

Someone suggested you adjust SVID behaviour which changes the CPU's AC Loadline which manipulates the vCore the CPU receives.  Doing so can result in triggering Intel's Intel Current Excursion Protection (CEP), impacting performance in some workloads.

However, if we're merely replying to your initial question, you don't need to change anything.

Note also that the VID is the CPUs internal voltage request. To monitor the voltage the CPU receives, refer to the motherboard's SIO section labeled Nuvoton in HWINFO (Vcore).

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090