No CPU undervolting on B660M Mortar?

Llewelyn_MT

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I just built my new Alder Lake platform and I am surprised to find that my new and shiny B660M Mortar offers absolutly no Vcore controls. Coming from a B550M Mortar I am very dissapointed that's the case as I love voltage tuning for better power efficiency. I consider returning the motherboard for that very reason to get something more suitable to my needs.

Is this a normal thing for a B660 motherboard to lack such an obvious feature? If so, I regret abandoning AM4 already.
 

badboy2k

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the main differences on Intel are what is and isn't available on the boards depending on the chipsets.

H: chipsets are very very Basic ones that are meant for very entry level Boards that have nearly no Features at all

B: Chipsets are mainly meant for Business's that have a few more features then the H Versions but Lack Overclocking Features and are meant for a system you just want XMP on and not Much Else.

Z: Chipsets are the Full Featured ones that include Everything and have full Control of all aspects of the Board

AMD are totally different but that is how Intel do there chipsets as they like to make them all different. AMD tend to have more Features on a B Series Chipset but that is like a Z chipset for Intel.
 

Llewelyn_MT

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Thanks, I will look into it. :emot-tip-wink:

the main differences on Intel are what is and isn't available on the boards depending on the chipsets.

H: chipsets are very very Basic ones that are meant for very entry level Boards that have nearly no Features at all

B: Chipsets are mainly meant for Business's that have a few more features then the H Versions but Lack Overclocking Features and are meant for a system you just want XMP on and not Much Else.

Z: Chipsets are the Full Featured ones that include Everything and have full Control of all aspects of the Board

AMD are totally different but that is how Intel do there chipsets as they like to make them all different. AMD tend to have more Features on a B Series Chipset but that is like a Z chipset for Intel.
Yeah, like who would like to have lower power consumption (with no performace loss) and/or noise on a business machine, amirite? :ROFLMAO:

Well, the original B660M Mortar BIOS did have Offset Voltage (that did not seem to work, but still) but it was since removed. This does seem like a basic functionality to me.
 

badboy2k

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Yeah, like who would like to have lower power consumption (with no performace loss) and/or noise on a business machine, amirite? :ROFLMAO:

Well, the original B660M Mortar BIOS did have Offset Voltage (that did not seem to work, but still) but it was since removed. This does seem like a basic functionality to me.
well that is intel for you. they always make weird decisions about things and it does suck.

the voltage offset was probably removed as the Chipset did not allow it as Intel had locked it down to try push there Z Series Boards as intel are well known for that sort of things.

i agree that being able to drop the power is a good thing but intel are well known for removing basic nice to have features from boards as all they ever seem to care about is getting more money by pushing higher end products that have it by artificially removing what people really need.

that is why i tend to stick with AMD 95% of the time.
 
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Is it confirmed that B660M Mortar does not support undervolting? Changing Lite Load [mode1] reduced the voltage and temperature, however, with a significant performance drop.
It seems that Z690 is achieving the same without any performance drop.

Is this the limitation of B660M or a bios bug that will be fixed eventually?
 

citay

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Try other CPU Lite Load modes, maybe some mode in between 1 and the default can achieve similar to stock performance at a lower power draw.
 
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I have tested 1-10 with no luck.

I have i7 13700k + silent loop 2 AIO, DDR5 6000 mhz and it hits 100st immediately when i start CPU stress test on mode 10 (default). Mode 1 reduce temp to 75st but performance gone down from 12000 to 4000 in 3dmark CPU test.

It looks like a limitation of B660M to me, unless someone can tell me otherwise. Im going to return it and get Z590 instead
 
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