Vcore different on friends pc with same cpu

[GtaSeriesFan]

So i learned my friend some ocing but i noticed something his vcore is at 1.114 and mine is at 1.27~ we have different motherboards i have the asrock z77 extreme 4 and he has the asrock z77 pro 3 also my chip is about 4 years old and his 2.

[Frankenburger]

Depending on silicon lottery, different chips can be stable at lower voltages compared to others. Also, a board with better power delivery can also help stability at lower voltages as well.

[Armakar]

You haven't really stated anything.. Do you have a question?

Different mobos give different voltages. Just setting the Vcore at 1.2 doesn't mean the voltage will stay at 1.2 - there's tons of settings that let the Vcore fluctuate. 

Settings like LLC (Load line calibration), auto-overclocks like Asus MCU, and stuff like CPU SVU Support all can give the CPU extra or lower voltage. 

 

[ShredBird]

Intel tests every chip it makes and builds in a Frequency vs. Voltage curve.  Chips that can sustain frequencies at lower voltages end up being higher end parts and chips that cannot end up being lower end parts.  There is wiggle room for each product and the voltage curve will vary chip to chip, batch to batch.

[LogicalDrm]

So...? I can only get to 4.3GHz on my chip while average is 4.4GHz. All chips are different. Besides, there's so many variables with two CPUs with probably 6mo in between manufacturing, 2 mobos from 2 manufacturers.