Undervolt locked?

[Ghostlu]

Hello,
as I always do, I am trying to undervolt these 2 systems from BIOS:
- i5 12400 + Asus Prime Z690-P D4
- i5 12600 + Asus Prime H670-Plus D4

The right setting should be Global Core SVID Voltage, but the only options available are AUTO or MANUAL (there is no ADAPTIVE+OFFSET).
What is going on?

As you can see, there is no ADAPTIVE + OFFSET option under Global Core SVID Voltage, what is wrong with it?

Spoiler: BIOS

 

[kyletreg]

Well both CPU's are none k and the h670 motherboard doesn't support manual clocking.

 

[Taraquin]

Hello,
as I always do, I am trying to undervolt these 2 systems from BIOS:
- i5 12400 + Asus Prime Z690-P D4
- i5 12600 + Asus Prime H670-Plus D4

The right setting should be Global Core SVID Voltage, but the only options available are AUTO or MANUAL (there is no ADAPTIVE+OFFSET).
What is going on?

As you can see, there is no ADAPTIVE + OFFSET option under Global Core SVID Voltage, what is wrong with it?

Spoiler: BIOS

View attachment 282136

On locked CPUs you cannot undervolt. Only way to decrease consumption/temp is to set temp limit and/powerlimit.

 

[Ghostlu]

On locked CPUs you cannot undervolt. Only way to decrease consumption/temp is to set temp limit and/powerlimit.

This is so sad, thank you

 

[Taraquin]

This is so sad, thank you

They are already quite efficient, but I agree it's sad. I have tried a lot on my 12400F, but no prevail.

 

[Deleted member 185158]

Hello,
as I always do, I am trying to undervolt these 2 systems from BIOS:
- i5 12400 + Asus Prime Z690-P D4
- i5 12600 + Asus Prime H670-Plus D4

The right setting should be Global Core SVID Voltage, but the only options available are AUTO or MANUAL (there is no ADAPTIVE+OFFSET).
What is going on?

As you can see, there is no ADAPTIVE + OFFSET option under Global Core SVID Voltage, what is wrong with it?

Spoiler: BIOS

View attachment 282136

Hi!

First off, you leave the Core VID on auto. It means nothing to you after you read the next sentence.
Use the "Actual VRM Core voltage" and set the CPU v-core to want you want it to be.
Offset is nonsense really. If you want lower v-core/temps on loads, simply lower the LLC from 3(usually asus's stock setting) to like 2.
You can use the LLC with Core VRM Core left on auto alone and see if that simply does the trick.
I can tell you from running a 12400F (see system specs) with an overclock, it'll run 4.6ghz on the stock (Auto-all) settings.

Enjoy!

 

[Taraquin]

Hi!

First off, you leave the Core VID on auto. It means nothing to you after you read the next sentence.
Use the "Actual VRM Core voltage" and set the CPU v-core to want you want it to be.
Offset is nonsense really. If you want lower v-core/temps on loads, simply lower the LLC from 3(usually asus's stock setting) to like 2.
You can use the LLC with Core VRM Core left on auto alone and see if that simply does the trick.
I can tell you from running a 12400F (see system specs) with an overclock, it'll run 4.6ghz on the stock (Auto-all) settings.

Enjoy!

Changing actual vrm core voltage does nothing on my setup, do you have a Z-mb or a B with ext clock gen? I can't see your system spec.

 

[Deleted member 185158]

Changing actual vrm core voltage does nothing on my setup, do you have a Z-mb or a B with ext clock gen? I can't see your system spec.

It's a ROG B660-G, yes has external clock gen.

The processors aren't locked, the boards are.

If it's a lower end board like Prime, it might Not let you change the v-core I guess.

Try lowering LLC for a lower v-core on load. LVL2 maybe LVL1. The vcore should drop to a more tolerable level and bring them temps down a little bit.

 

[Taraquin]

It's a ROG B660-G, yes has external clock gen.

The processors aren't locked, the boards are.

If it's a lower end board like Prime, it might Not let you change the v-core I guess.

Try lowering LLC for a lower v-core on load. LVL2 maybe LVL1. The vcore should drop to a more tolerable level and bring them temps down a little bit.

I have seen people with locked 12600K being able to raise SA voltage etc on B660-boards, so I thought it was CPU-lock, not a board lock?

 

[Deleted member 185158]

I have seen people with locked 12600K being able to raise SA voltage etc on B660-boards, so I thought it was CPU-lock, not a board lock?

No system agent is locked on the processor. You CAN change it, but it will read default when looking at HWInfo64. Already experimented with all that....

The BCLK lock is from management engine FIRMWARE update from the bios DL section. 103mhz is all you get and also eliminates OC on Alder Lake chips as well.

Best motherboard for overclocking Non “K” Intel...

www.overclock.net

 

[Max(IT)]

Hello,
as I always do, I am trying to undervolt these 2 systems from BIOS:
- i5 12400 + Asus Prime Z690-P D4
- i5 12600 + Asus Prime H670-Plus D4

The right setting should be Global Core SVID Voltage, but the only options available are AUTO or MANUAL (there is no ADAPTIVE+OFFSET).
What is going on?

As you can see, there is no ADAPTIVE + OFFSET option under Global Core SVID Voltage, what is wrong with it?

Spoiler: BIOS

View attachment 282136

Unfortunately on another forum I saw other users with the same issue: Adaptive mode not present in GLOBAL CORE SVID VOLTAGE, but it seems to be related to the motherboard, non to the CPU.
I saw an user with a 13700K and a B660 with the same problem. If this is true, bad choice by Asus (or Intel).

On locked CPUs you cannot undervolt. Only way to decrease consumption/temp is to set temp limit and/powerlimit.

it’s not the locked CPU the problem (or at least not ONLY the CPU). It probably also is the motherboard.
I know an user with the same issue on a 13700K (with a B660 mobo).



I have a 13900K on a Z690 and the ADAPTIVE setting is there

 

[Taraquin]

Unfortunately on another forum I saw other users with the same issue: Adaptive mode not present in GLOBAL CORE SVID VOLTAGE, but it seems to be related to the motherboard, non to the CPU.
I saw an user with a 13700K and a B660 with the same problem. If this is true, bad choice by Asus (or Intel).


it’s not the locked CPU the problem (or at least not ONLY the CPU). It probably also is the motherboard.
I know an user with the same issue on a 13700K (with a B660 mobo).

View attachment 284399

I have a 13900K on a Z690 and the ADAPTIVE setting is there

Yeah, it seems it is both CPU and MB :/

 

[Ghostlu]

Damn, I hate the mess they made with such an easy setting. What was the problem of leaving it there, mah
(Bella @Max(IT) ahah)

 

[WhenMusicAttacks]

Hello,
as I always do, I am trying to undervolt these 2 systems from BIOS:
- i5 12400 + Asus Prime Z690-P D4
- i5 12600 + Asus Prime H670-Plus D4

The right setting should be Global Core SVID Voltage, but the only options available are AUTO or MANUAL (there is no ADAPTIVE+OFFSET).
What is going on?

As you can see, there is no ADAPTIVE + OFFSET option under Global Core SVID Voltage, what is wrong with it?

Spoiler: BIOS

View attachment 282136

On z690m asus board i have offset avaiable, but not working on locked cpu - if i set it too low, the performance tanks.

Throttlestop creator mentioned that there is a release of microcode from intel that allow undervolt, 0x104, used in the second half of 2022. I found b760m gaming x ddr4 from gigabyte with F1 bios works with proper undervolt -

MSI boards always had a setting in bios "lite load" that can be lowered to reduce power consumption without losing performance. Default is 12 and can be lowered to 1. It will actually crash if the cpu cannot handle it, wich happened with the 12900f the only locked CPU that i needed to set higher than 1. I tested dozens of 12400f/12500/12600 they can all do it without issues. They can also take undervolt of -50mv since late 2022 - probably because of the 0x104 microcode - my first report here

 

[Max(IT)]

I saw some people with Lite Load causing performance to drop consistently going below 6 or 7…

 

[WhenMusicAttacks]

I saw some people with Lite Load causing performance to drop consistently going below 6 or 7…

Never had that here. See video with scores for reference.

 

[WhenMusicAttacks]

Update: i tried to use the unlocked microcode in Msi b760m board. Sadly the offset there is limited to -50 but i can also use lite load 1 to further improve efficiency. I was able to make the 12400 run fully passive and score same as most reviews on Cinebench r15 and r23, much better on Geekbench (as i tuned ram timings)

 

[Taraquin]

Update: i tried to use the unlocked microcode in Msi b760m board. Sadly the offset there is limited to -50 but i can also use lite load 1 to further improve efficiency. I was able to make the 12400 run fully passive and score same as most reviews on Cinebench r15 and r23, much better on Geekbench (as i tuned ram timings)

Nice! Too bad SA-voltage is still locked :/

 

[WhenMusicAttacks]

Nice! Too bad SA-voltage is still locked :/

I have been able to reach 6600 on a 12600 non K using the b660i strix, so for ddr5 i think the limit is also on the PCB tolerance at high frequency on 6 layer 4 slot motherboards. Running at 6000 is nice and doesnt require much voltage on the sticks, so it's fine for me as voltage/frequency ratio

 

[Taraquin]

I have been able to reach 6600 on a 12600 non K using the b660i strix, so for ddr5 i think the limit is also on the PCB tolerance at high frequency on 6 layer 4 slot motherboards. Running at 6000 is nice and doesnt require much voltage on the sticks, so it's fine for me as voltage/frequency ratio

Considering gear ratio is half and 3400-3800 is usually doable in gear 1 then 6800-7600 in gear 2 on DDR5 should in theory be possible.