I5-12600KF Undervolting won't work

[WhenMusicAttacks]

No one in his right mind would spend time to validate such a terrible score - on a bechmark that was replaced after 1 year with r23 - the fact that you did tells a lot about your connection with reality. That's why there are no other scores close to yours - who cares?
The memory talk was referring to the Geekbench 5 score, if you could understand simple english. Cinebench is useless for evaluating 99% of users usage pattern. Again - threadripper 19xx cpu gets amazing cinebench scores, no one would buy that over a 12100 anyawy.

 

[Not4ce]

The only 2 things locked on those chips is System Agent and cpu multiplier.

There's nothing to discuss. A 12400F has gotta be the coolest 6 core chip I've ever run, can't imagine it needs an under-volt in any way....

On locked 12th and 13th gens SA voltage is locked at about 0.95v, even a Z-board cant unlock. This means getting over 3400-3800 in G1 is impossible. On a K-sku 4000-4300 G1 is doable.

n 12400f, IMC voltage (SA) doesn't work and is locked at around 0.95 You can change it on the board and that would do nothing.

So just letting all of you know, some B660 boards now have unlocked SA for non-k cpu. I have a Msi B660M-A where its bios ver:7D59v1A paired with a 12400F

Im not an overclocker and dont tinker with ram, and before you ask: no i havent messed around nor tried hitting 3800mhz at G1 etc

I can now run my corsair CMK32GX4M2D3600C18 kit at 3600 gear 1:1, its a SK Hynix 5.4 rev chip which can apparently do 3800 c17. A few months ago only gear 2 worked as Cpu SA was locked around 0.956V but after checking my bios today, SA can be set to "manual override" and changed

Others on overclockers.net has stated their Asus tuf b660 mobos also have unlocked SA after bios update, which is very cool. So you can now buy a few cheaper B660 D4 board and maybe use a cheap "Patriot PC4-35200 (4400MHz); Tested Timings: 18-26-26-46; Voltage: 1.45" kits and maybe tweak them for tighter timings since I think theyre samsung B die? These boards can handle upto 4800mhz D4 on two dimm slots I think, I could be wrong

Anyways, heres a screenshot, im currently running x4 1R 8gig 3200 mhz c16 renegade kits at G1, since it acts like dual rank and performs better than my corsair kit

I left SA voltage on Auto for now, but just used 1.20 for my corsair 3600c18 kit to test earlier today

 

[WhenMusicAttacks]

This sounds amazing. If i can find a bios with both undervolting and SA unlocked, it would be heaven. 12400f only deficit is the small cache, with fast d5 making up for it the performance will be stellar.

 

[Not4ce]

This sounds amazing. If i can find a bios with both undervolting and SA unlocked, it would be heaven. 12400f only deficit is the small cache, with fast d5 making up for it the performance will be stellar.

Well this mobo was 180aud (150usd), so it's very well priced imo

It can undervolt and now just got SA unlocked, so this seems like an excellent pairing for a value builds where you don't sacrifice much

Asus TUF B660M-E D4 might also have unlocked SA. But I haven't seen anyone post screenshots of that other than whispers here and there

If anyone of you guys had B660 boards, might be worth updating bios and checking if SA is also unlocked for your models

 

[Deleted member 185158]

No one in his right mind would spend time to validate such a terrible score - on a bechmark that was replaced after 1 year with r23 - the fact that you did tells a lot about your connection with reality. That's why there are no other scores close to yours - who cares?
The memory talk was referring to the Geekbench 5 score, if you could understand simple english. Cinebench is useless for evaluating 99% of users usage pattern. Again - threadripper 19xx cpu gets amazing cinebench scores, no one would buy that over a 12100 anyawy.

That's because you're dishonest and can't give a valid proof of that shit you put up.
I'll wait forever to see a 3.4ghz 12400F with an under-volt beat a chip running 4.6ghz with memory at defaults, let alone what I exampled.
Simply put, Cinebench scales on frequency and core count. Your screen shot is pure bullshit.
3.4ghz all core, with under-volt. Beat my score then Prove it.
Put up or shut up.

So just letting all of you know, some B660 boards now have unlocked SA for non-k cpu. I have a Msi B660M-A where its bios ver:7D59v1A paired with a 12400F

Im not an overclocker and dont tinker with ram, and before you ask: no i havent messed around nor tried hitting 3800mhz at G1 etc

I can now run my corsair CMK32GX4M2D3600C18 kit at 3600 gear 1:1, its a SK Hynix 5.4 rev chip which can apparently do 3800 c17. A few months ago only gear 2 worked as Cpu SA was locked around 0.956V but after checking my bios today, SA can be set to "manual override" and changed

Others on overclockers.net has stated their Asus tuf b660 mobos also have unlocked SA after bios update, which is very cool. So you can now buy a few cheaper B660 D4 board and maybe use a cheap "Patriot PC4-35200 (4400MHz); Tested Timings: 18-26-26-46; Voltage: 1.45" kits and maybe tweak them for tighter timings since I think theyre samsung B die? These boards can handle upto 4800mhz D4 on two dimm slots I think, I could be wrong

Anyways, heres a screenshot, im currently running x4 1R 8gig 3200 mhz c16 renegade kits at G1, since it acts like dual rank and performs better than my corsair kit

I left SA voltage on Auto for now, but just used 1.20 for my corsair 3600c18 kit to test earlier today

View attachment 289323

Which is quite interesting!!
Because System Agent is locked CPU side, not by the bios.

Already had my 12400F at 6400mhz with System Agent running 0.95v.
Accomplished on a Strix B660-I 2 slot mainboard.
Sticks are Patriot C36 Series 5200, which happen to be Samsung ICs.

 

[Not4ce]

Which is quite interesting!!
Because System Agent is locked CPU side, not by the bios.

Already had my 12400F at 6400mhz with System Agent running 0.95v.

So im confused now

Can you explain why this is working now? So what are Msi and Asus doing that's allowing them to bypass the cpu lock? Because I know for a fact this option was greyed out 3 months ago and I was super upset I was using 3600 gear 2

System wouldn't boot with gear 1 as SA was 0.95

How is this now being bypassed by mobo manufacturers? Or am I just misunderstanding something here?

 

[Deleted member 185158]

So im confused now

Can you explain why this is working now? So what are Msi and Asus doing that's allowing them to bypass the cpu lock? Because I know for a fact this option was greyed out 3 months ago and I was super upset I was using 3600 gear 2

System wouldn't boot with gear 1 as SA was 0.95

How is this now being bypassed by mobo manufacturers? Or am I just misunderstanding something here?

I've not seen it grayed out on either of my boards. In fact I can raise it, it just doesn't stay at the value I input.

I fear 1.015v still wouldn't be enough for gear 1 past 5600mhz which is what ircow had tested up to max.

Considering unlocked chips, we are running closer to 1.350v system agent and higher, pretty much set them wherever you'd like.

 

[ThrashZone]

Hi,
Bios bugs happen.
One day t1 might work but being a non-k chip I doubt it.

Seeing top out on 12400f is 3200 even 3600 is not supported
DDR5 is 4800 though so feel lucky you can do t2 at 3600.

 

[Deleted member 185158]

Hi,
Bios bugs happen.
One day t1 might work but being a non-k chip I doubt it.

Seeing top out on 12400f is 3200 even 3600 is not supported
DDR5 is 4800 though so feel lucky you can do t2 at 3600.

Maybe there's some small difference between the ddr4 boards and the ddr5 boards, which mine are ddr5.

Gear 1 at lower frequency isn't my desire unfortunately. Gear 2 6000mhz is fine performance.

1t and 2t command rates is going to be on the memory side though. Some ddr4 B-Die with A2 pcb seems to do much better with 2t command rates.

 

[ThrashZone]

Maybe there's some small difference between the ddr4 boards and the ddr5 boards, which mine are ddr5.

Gear 1 at lower frequency isn't my desire unfortunately. Gear 2 6000mhz is fine performance.

1t and 2t command rates is going to be on the memory side though. Some ddr4 B-Die with A2 pcb seems to do much better with 2t command rates.

Hi,
On asus t1 usually required xmp2 "weird they offer xmp2 profile I always thought that was a memory firmware deal" which alters some secondary timings.

 

[Deleted member 185158]

Hi,
On asus t1 usually required xmp2 "weird they offer xmp2 profile I always thought that was a memory firmware deal" which alters some secondary timings.

Hi!!
It does. Actually, mine has XMP2 with "asus tweaked timings", so basically 3 profiles to choose from.

For Y-Cruncher, it is mandatory to set up your secondary and third timing sets to accomplish a good time. The Asus optimized timings are OK at best.

 

[Cowboystrekk]

So just letting all of you know, some B660 boards now have unlocked SA for non-k cpu. I have a Msi B660M-A where its bios ver:7D59v1A paired with a 12400F

Im not an overclocker and dont tinker with ram, and before you ask: no i havent messed around nor tried hitting 3800mhz at G1 etc

I can now run my corsair CMK32GX4M2D3600C18 kit at 3600 gear 1:1, its a SK Hynix 5.4 rev chip which can apparently do 3800 c17. A few months ago only gear 2 worked as Cpu SA was locked around 0.956V but after checking my bios today, SA can be set to "manual override" and changed

Others on overclockers.net has stated their Asus tuf b660 mobos also have unlocked SA after bios update, which is very cool. So you can now buy a few cheaper B660 D4 board and maybe use a cheap "Patriot PC4-35200 (4400MHz); Tested Timings: 18-26-26-46; Voltage: 1.45" kits and maybe tweak them for tighter timings since I think theyre samsung B die? These boards can handle upto 4800mhz D4 on two dimm slots I think, I could be wrong

Anyways, heres a screenshot, im currently running x4 1R 8gig 3200 mhz c16 renegade kits at G1, since it acts like dual rank and performs better than my corsair kit

I left SA voltage on Auto for now, but just used 1.20 for my corsair 3600c18 kit to test earlier today

View attachment 289323

I can set 1 3v in bios but still does not move from 0.95v. Hopefully a new bios for B660 prime can fix it

 

[ThrashZone]

Hi!!
It does. Actually, mine has XMP2 with "asus tweaked timings", so basically 3 profiles to choose from.

For Y-Cruncher, it is mandatory to set up your secondary and third timing sets to accomplish a good time. The Asus optimized timings are OK at best.

Hi,
Yeah try the other xmp profiles with t1 I used xmp 2 on my z490 and it works nothing earth shattering though.

 

[Deleted member 185158]

Hi,
Yeah try the other xmp profiles with t1 I used xmp 2 on my z490 and it works nothing earth shattering though.

Don't have this cpu installed at this time. It's collecting some dust. So far behind the 13700K, I don't have a desire to use it for anything.

Been concentrating on 3D with old cards lately. A bit more challenging than it looks though.


But with video cards this old, even a stock 12400F would suffice. Damn gpus weak, processor is more than efficient enough.

 

[WhenMusicAttacks]

That's because you're dishonest and can't give a valid proof of that shit you put up.
I'll wait forever to see a 3.4ghz 12400F with an under-volt beat a chip running 4.6ghz with memory at defaults, let alone what I exampled.
Simply put, Cinebench scales on frequency and core count. Your screen shot is pure bullshit.
3.4ghz all core, with under-volt. Beat my score then Prove it.
Put up or shut up.

Which is quite interesting!!
Because System Agent is locked CPU side, not by the bios.

Already had my 12400F at 6400mhz with System Agent running 0.95v.
Accomplished on a Strix B660-I 2 slot mainboard.
Sticks are Patriot C36 Series 5200, which happen to be Samsung ICs.

My board is running at 117bclk, it's a mortar max. You could have checked the Geekbench 5 submission. It is also undervolted. The b660g needs a lot more power to get the same results.
The point is, i didn't put much effort in that score nor the 117bclk OC. Just makes zero sense to benchmate low scores.

 

[Deleted member 185158]

My board is running at 117bclk, it's a mortar max. You could have checked the Geekbench 5 submission. It is also undervolted. The b660g needs a lot more power to get the same results.
The point is, i didn't put much effort in that score nor the 117bclk OC. Just makes zero sense to benchmate low scores.

That wasn't the point of the argument of that you gain all this fabulous performance from an under-volt. (With a stock locked chip/mainboard)

I could have went to higher, but again, the stock cooler was only good for 4.6ghz. I didn't go nuts or anything tweaking either. I did that more so with the G6900, but again used only the stock cooler, but swapped from the 12400F, which was adequate for over 5ghz.

Geekbench5 single core was 1951 points. 155 bus clocks.

 

[Cowboystrekk]

So just letting all of you know, some B660 boards now have unlocked SA for non-k cpu. I have a Msi B660M-A where its bios ver:7D59v1A paired with a 12400F

Im not an overclocker and dont tinker with ram, and before you ask: no i havent messed around nor tried hitting 3800mhz at G1 etc

I can now run my corsair CMK32GX4M2D3600C18 kit at 3600 gear 1:1, its a SK Hynix 5.4 rev chip which can apparently do 3800 c17. A few months ago only gear 2 worked as Cpu SA was locked around 0.956V but after checking my bios today, SA can be set to "manual override" and changed

Others on overclockers.net has stated their Asus tuf b660 mobos also have unlocked SA after bios update, which is very cool. So you can now buy a few cheaper B660 D4 board and maybe use a cheap "Patriot PC4-35200 (4400MHz); Tested Timings: 18-26-26-46; Voltage: 1.45" kits and maybe tweak them for tighter timings since I think theyre samsung B die? These boards can handle upto 4800mhz D4 on two dimm slots I think, I could be wrong

Anyways, heres a screenshot, im currently running x4 1R 8gig 3200 mhz c16 renegade kits at G1, since it acts like dual rank and performs better than my corsair kit

I left SA voltage on Auto for now, but just used 1.20 for my corsair 3600c18 kit to test earlier today

View attachment 289323

Do you know which Asus-bios did this? I can run 3700 G1 on my 12400F now at 0.95v. I2hard tested my 2dimm MB Asus B660m K and it could run 4100 G1 at 1.3v SA using a K-sku vs the other 4dimm B660 which maxed out at 3400-3900. Would be awesome if I could actually UV and OC ram to 4000-4200, maybe it finally can beat my 5600X? I know my sticks can do 4400 with ease (Patriot Viper 4400cl19 B-die). Got link to Asus-users that has been able to do this?

 

[Not4ce]

Do you know which Asus-bios did this? I can run 3700 G1 on my 12400F now at 0.95v. I2hard tested my 2dimm MB Asus B660m K and it could run 4100 G1 at 1.3v SA using a K-sku vs the other 4dimm B660 which maxed out at 3400-3900. Would be awesome if I could actually UV and OC ram to 4000-4200, maybe it finally can beat my 5600X? I know my sticks can do 4400 with ease (Patriot Viper 4400cl19 B-die). Got link to Asus-users that has been able to do this?

Well ive heard people mention G1 and 3600-3800mhz working here and there on overclockers.net, reddit, ltt threads and now it worked for me. I cant really remember which threads they were, since I dont have forum accounts there, but google should be a good help if you want to look this up

2-3 people mentioned: Asus TUF B660M-E D4 working well for them, after Sept Bios update 22

And 1-3 individuals, including myself got it to work on a MSI B660-M A with this years Jan bios update, for others its been working since last year

Now I have no clue how and why this works, since @ShrimpBrime says it CPU locked and has nothing to do with mobo, so honestly, your mileage will vary and I cant recommend buying a mobo just to test this. Unless its Amazon or somewhere with great return policy, it might be worth a gamble

Asus Tuf, Gig Aorus and Msi b660 boards seem to have the best luck with SA voltage actually changing, but im not sure why/how this "technically" works. This didnt work last year for me, my cpu and mobo didnt change so idk whats happening here...

 

[Deleted member 185158]

Well ive heard people mention G1 and 3600-3800mhz working here and there on overclockers.net, reddit, ltt threads and now it worked for me. I cant really remember which threads they were, since I dont have forum accounts there, but google should be a good help if you want to look this up

2-3 people mentioned: Asus TUF B660M-E D4 working well for them, after Sept Bios update 22

And 1-3 individuals, including myself got it to work on a MSI B660-M A with this years Jan bios update, for others its been working since last year

Now I have no clue how and why this works, since @ShrimpBrime says it CPU locked and has nothing to do with mobo, so honestly, your mileage will vary and I cant recommend buying a mobo just to test this. Unless its Amazon or somewhere with great return policy, it might be worth a gamble

Asus Tuf, Gig Aorus and Msi b660 boards seem to have the best luck with SA voltage actually changing, but im not sure why/how this "technically" works. This didnt work last year for me, my cpu and mobo didnt change so idk whats happening here...

The answer is easy.
I'll even copy paste it from the January update for the bios on your board, the MSI B660 ma.


Description:
- Support exFAT file system.
- Update CPU Micro code.
- Improve memory compatibility.
^^
Oh, there it is.

Improved memory compatibility.

Obviously you can't increase SA, so I suppose the only logical answer is that the bios update improves memory operation.

 

[Cowboystrekk]

Well ive heard people mention G1 and 3600-3800mhz working here and there on overclockers.net, reddit, ltt threads and now it worked for me. I cant really remember which threads they were, since I dont have forum accounts there, but google should be a good help if you want to look this up

2-3 people mentioned: Asus TUF B660M-E D4 working well for them, after Sept Bios update 22

And 1-3 individuals, including myself got it to work on a MSI B660-M A with this years Jan bios update, for others its been working since last year

Now I have no clue how and why this works, since @ShrimpBrime says it CPU locked and has nothing to do with mobo, so honestly, your mileage will vary and I cant recommend buying a mobo just to test this. Unless its Amazon or somewhere with great return policy, it might be worth a gamble

Asus Tuf, Gig Aorus and Msi b660 boards seem to have the best luck with SA voltage actually changing, but im not sure why/how this "technically" works. This didnt work last year for me, my cpu and mobo didnt change so idk whats happening here...

Updated to 2214 bios, SA-voltage still locked at 0.95v, offset or static does nothing :\

 

[Deleted member 185158]

Updated to 2214 bios, SA-voltage still locked at 0.95v, offset or static does nothing :\

It's not going to unlock. Ever. On any board. With any bios version.

 

[Cowboystrekk]

Yeah, I didn't get my hopes up, but I still wonder how he got SA voktage to run at 1.02v? That is quite a bit higher than the typical 0.89-0.95v I see people usually get. One guy I talked to with 0.89v was unable to run 3200 xmp in gear 1 due to this, that is just terrible.

 

[Deleted member 185158]

Yeah, I didn't get my hopes up, but I still wonder how he got SA voktage to run at 1.02v? That is quite a bit higher than the typical 0.89-0.95v I see people usually get. One guy I talked to with 0.89v was unable to run 3200 xmp in gear 1 due to this, that is just terrible.

Probably from running a bunch of stuff together and it twitched the reading a bit.

None of these are direct voltage readings. Not even v-core unless you can measure with a Dimm for accuracy. There's margin of errors to consider, be it the software or human interaction.

It's like the guy that came in, beat my score, claimed it to be an under-volt at stock clocks, when in fact it was all opposite. Somewhere a lie was encountered. And needed to be called out.

.95v.
Funny enough, when testing my 13600KF, I couldn't lower SA below 1.050v..... go figure right?

 

[Not4ce]

Yeah, I didn't get my hopes up, but I still wonder how he got SA voktage to run at 1.02v? That is quite a bit higher than the typical 0.89-0.95v I see people usually get. One guy I talked to with 0.89v was unable to run 3200 xmp in gear 1 due to this, that is just terrible.

Probably from running a bunch of stuff together and it twitched the reading a bit.

None of these are direct voltage readings. Not even v-core unless you can measure with a Dimm for accuracy. There's margin of errors to consider, be it the software or human interaction.

It's like the guy that came in, beat my score, claimed it to be an under-volt at stock clocks, when in fact it was all opposite. Somewhere a lie was encountered. And needed to be called out.

.95v.
Funny enough, when testing my 13600KF, I couldn't lower SA below 1.050v..... go figure right?

I doubt its human error, or reading error.

The fact is, 3600mhz G1 runs now, 3200 with 4 dimms gear 1 runs as well

A few months ago it didnt, and my reading was 0.95. The only change has been 2023 bios update and thats it, so human error doesnt hold water here, its the mobo doing something new. It may be cpu locked, but the fact is that it works. The mobo is doing something that lets the rams run at G1. What that is, I dont know, but what matters is that it functions now

Heres a time spy score to validate it infact does run G1 now. Before, i wouldnt break 16 800, G1 and dual rank boosted it to 17 500 on every timespy run

Edit: Putting everything to auto with my ram kits runs everything at G2 0.95 V, but the screenshots are from me turning XMP on, selecting G1 and everything else on auto. That is another reason that makes me doubt its a reading error, since G2 shows expected 0.95V and scores plummet by 700 points in time spy. In game, fps drops by 5-10 fps for 1% lows in G2 (not average fps, just the lows)

 

[Deleted member 185158]

View attachment 290000
View attachment 290001
View attachment 290002

I doubt its human error, or reading error.

The fact is, 3600mhz G1 runs now, 3200 with 4 dimms gear 1 runs as well

A few months ago it didnt, and my reading was 0.95. The only change has been 2023 bios update and thats it, so human error doesnt hold water here, its the mobo doing something new. It may be cpu locked, but the fact is that it works. The mobo is doing something that lets the rams run at G1. What that is, I dont know, but what matters is that it functions now

Heres a time spy score to validate it infact does run G1 now. Before, i wouldnt break 16 800, G1 and dual rank boosted it to 17 500 on every timespy run

Edit: Putting everything to auto with my ram kits runs everything at G2 0.95 V, but the screenshots are from me turning XMP on, selecting G1 and everything else on auto. That is another reason that makes me doubt its a reading error, since G2 shows expected 0.95V and scores plummet by 700 points in time spy. In game, fps drops by 5-10 fps for 1% lows in G2 (not average fps, just the lows)

Yes yes. Skewed readings. That's all you are getting.

Why Is System Agent (SA) Voltage Locked on Non-K 12th Generation...

Explains that System Agent (SA) voltage is locked on non-K SKU Processors for a good starter experience of memory overclocking, not a replacement for the Pro/Best features of a K-SKU/Z-series combination.

www.intel.com