F5F Stay Refreshed Hardware Desktop Adjusting voltage on the B660 (12700KF and 13700)

Adjusting voltage on the B660 (12700KF and 13700)

Adjusting voltage on the B660 (12700KF and 13700)

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abnersz
Junior Member
13
09-08-2022, 11:39 PM
#1
Hey! For your setup with the MSI Pro B660m-a and 12700KF, I checked the BIOS settings but couldn't adjust the voltage offset. The XTU confirms UVP is active, though it seems some boards let you turn it off. I found that certain models with the B660 chipset do support disabling UVP and applying undervolt settings. Regarding the 13700 (non-K) motherboard, it appears undervolting isn't supported yet. Intel's new Undervolt Protection is interesting but its capabilities aren't clear from what I've seen. Let me know if you need more details! Hope this helps!
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abnersz
09-08-2022, 11:39 PM #1

Hey! For your setup with the MSI Pro B660m-a and 12700KF, I checked the BIOS settings but couldn't adjust the voltage offset. The XTU confirms UVP is active, though it seems some boards let you turn it off. I found that certain models with the B660 chipset do support disabling UVP and applying undervolt settings. Regarding the 13700 (non-K) motherboard, it appears undervolting isn't supported yet. Intel's new Undervolt Protection is interesting but its capabilities aren't clear from what I've seen. Let me know if you need more details! Hope this helps!

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Ozwego
Member
191
09-10-2022, 04:19 AM
#2
You can only lower the voltage by .05mV on B series boards even when protection is off; exceeding that halves the power and cuts performance significantly. Luckily, Intel designed B series boards for this, but for better undervolt results you’ll need a Z790/690 M-series board. I’m using a 13600kf that I’ve undervolted to 1.15V, still delivering full performance and hitting 66c at the original 1.34V. At stock voltage it reached 100c instantly.
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Ozwego
09-10-2022, 04:19 AM #2

You can only lower the voltage by .05mV on B series boards even when protection is off; exceeding that halves the power and cuts performance significantly. Luckily, Intel designed B series boards for this, but for better undervolt results you’ll need a Z790/690 M-series board. I’m using a 13600kf that I’ve undervolted to 1.15V, still delivering full performance and hitting 66c at the original 1.34V. At stock voltage it reached 100c instantly.

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Rwina
Junior Member
9
09-10-2022, 04:04 PM
#3
I adjusted the maximum negative offset to 0.05 and ensured it stays that way. On Windows, I verified the CPUZ HWinfo data and the voltage stayed consistent. When running Cinebench for Assassin III, I achieved 100 frames per second in just a few seconds.
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Rwina
09-10-2022, 04:04 PM #3

I adjusted the maximum negative offset to 0.05 and ensured it stays that way. On Windows, I verified the CPUZ HWinfo data and the voltage stayed consistent. When running Cinebench for Assassin III, I achieved 100 frames per second in just a few seconds.

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FrezzyHero
Junior Member
33
09-10-2022, 05:19 PM
#4
It's typical for B series boards. For higher gaming performance, you can turn off extra cores in the BIOS and lower the voltage to 5-7c, which causes the CPU to throttle to 21k.
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FrezzyHero
09-10-2022, 05:19 PM #4

It's typical for B series boards. For higher gaming performance, you can turn off extra cores in the BIOS and lower the voltage to 5-7c, which causes the CPU to throttle to 21k.

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bear7001
Senior Member
448
09-13-2022, 09:44 AM
#5
It's no longer accurate. You can safely undervolt a B660 board as long as Undervolt Protection remains off in the BIOS. ThrottleStop 9.5.1 also enables this feature. @wazaa08 Certain Asus boards let you choose the early 0x104 microcode setting, which disables Undervolt Protection and permits undervolting.
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bear7001
09-13-2022, 09:44 AM #5

It's no longer accurate. You can safely undervolt a B660 board as long as Undervolt Protection remains off in the BIOS. ThrottleStop 9.5.1 also enables this feature. @wazaa08 Certain Asus boards let you choose the early 0x104 microcode setting, which disables Undervolt Protection and permits undervolting.

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KarmaNoob
Junior Member
49
09-14-2022, 05:15 PM
#6
It looks like the Asus B660 might be a good fit. I’m checking for other motherboards that support UV treatment and see if they can work with your 13700, even though it’s not a K model.
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KarmaNoob
09-14-2022, 05:15 PM #6

It looks like the Asus B660 might be a good fit. I’m checking for other motherboards that support UV treatment and see if they can work with your 13700, even though it’s not a K model.