Voltage question on overclocking

[cenedra]

Hi Guys,

Im currently using i2500k and set Vcore to 1.28V @ 4.2Ghz. However when im gaming I notice from core temp that my VID increases to 1.36V under load. Is this due to LLC settings? And should i leave LLC on, or off it so that my voltage can be constant?

Thanks.

 

[Yureak]

Your chip will automatically draw more power when necessary

If it doesnt affect stability can just leave it

 

[cenedra]

In that case, if using high vcore like 1.4v, wouldnt the CPU exceed the safe voltage of 1.5v in full load?

 

[Yureak]

In that case, if using high vcore like 1.4v, wouldnt the CPU exceed the safe voltage of 1.5v in full load?

Dont believe the overdraw is so much. I ran 1.4v on my 4670k and when stressed goes up to 1.43 or so.

1.5v is still ok if u have custom loop cooling

 

[cenedra]

Im a little confused by Vcore and VID. Can someone enlighten me pls.

When i run prime95, my vcore as shown in CPU-Z is 12.8v, but core temp shows my VID as 13.7V. So which voltage is my CPU actually receiving?


I often see people talking about setting Vcores in bios and not to exceed Vcore beyond the safety limits, but not many people talking about VIDs.


Lets say if a CPU has a max voltage tolerance of 1.6V, and when oced, its Vcore is 1.5v but the VID is 1.7v, is this fine or has it exceeded the safe voltage?

 

[devilwahaha]

Im a little confused by Vcore and VID. Can someone enlighten me pls.

When i run prime95, my vcore as shown in CPU-Z is 12.8v, but core temp shows my VID as 13.7V. So which voltage is my CPU actually receiving?


I often see people talking about setting Vcores in bios and not to exceed Vcore beyond the safety limits, but not many people talking about VIDs.


Lets say if a CPU has a max voltage tolerance of 1.6V, and when oced, its Vcore is 1.5v but the VID is 1.7v, is this fine or has it exceeded the safe voltage?

If you wanna OC and want to play around with the voltages and stuff, at least have the heart to bother googling.

VID is simply the stock voltage that the chip requests for the frequency its running at that is set when Intel bins them, eg my 3570k will draw 1.3V when I set it to 4.2GHz if I dont manually set voltage settings

Vcore is simply the voltage your chip is receiving.

Simple googling gave me these answers.

 

[cenedra]

If you wanna OC and want to play around with the voltages and stuff, at least have the heart to bother googling.

VID is simply the stock voltage that the chip requests for the frequency its running at that is set when Intel bins them, eg my 3570k will draw 1.3V when I set it to 4.2GHz if I dont manually set voltage settings

Vcore is simply the voltage your chip is receiving.

Simple googling gave me these answers.

I already did, thats why im asking.

I set my vcore to be a fixed voltage 1.28v, which core temp is reporting correctly, yet my VID displayed in CPU-Z is exceeding that voltage to 1.37v, and thus the question i asked, which voltage is the CPU receiving?

 

[Yureak]

I already did, thats why im asking.

I set my vcore to be a fixed voltage 1.28v, which core temp is reporting correctly, yet my VID displayed in CPU-Z is exceeding that voltage to 1.37v, and thus the question i asked, which voltage is the CPU receiving?

No idea on vid but your parameters are very safe no worries

 

[devilwahaha]

I already did, thats why im asking.

I set my vcore to be a fixed voltage 1.28v, which core temp is reporting correctly, yet my VID displayed in CPU-Z is exceeding that voltage to 1.37v, and thus the question i asked, which voltage is the CPU receiving?

VID is simply a set of numbers that Intel stamps onto each CPU so that mobos can know how much voltage to supply at each frequency to be stable, example 3.2GHz 1V, 3.4GHz 1.1V etc, while Vcore is your "real" voltage reading. VID voltages will definitely work properly for each of the steppings but they may not always be the most efficient, like in your case Intel deems 1.37v is required for your set frequency but its working fine with 1.28v.

 

[cenedra]

VID is simply a set of numbers that Intel stamps onto each CPU so that mobos can know how much voltage to supply at each frequency to be stable, example 3.2GHz 1V, 3.4GHz 1.1V etc, while Vcore is your "real" voltage reading. VID voltages will definitely work properly for each of the steppings but they may not always be the most efficient, like in your case Intel deems 1.37v is required for your set frequency but its working fine with 1.28v.

oic thx, i understand now.

So there's no need to worry about VID. I was just surprised how come its so much higher than my vcore, and i was trying ways to lower the VID LOL.

 

[devilwahaha]

oic thx, i understand now.

So there's no need to worry about VID. I was just surprised how come its so much higher than my vcore, and i was trying ways to lower the VID LOL.

End users only can tweak vcore usually from mobo, VID can be tweak IIRC but thats a highly technical feat thats pointless for us end users.