Voltage question

[dinosuar]

In bios I set my vcore to 1.45 but in cpuz it shows 1.38-1.4

Which one should I go by if I don't want to go past 1.52?

btw this is the system

e2180 @ 3.2 400x8
ga-p35-ds3l rev2
2x1gb corsair xms2 5-5-5-15
9600gt
600w psu

 

[Xenozx]

As a rule of thumb, I would not set the bios over 1.5v.

the thing your seeing is called vdroop. its very common, and actually will show even lower if you go under load.

 

[aethelwulf]

As a rule of thumb, I would not set the bios over 1.5v.

the thing your seeing is called vdroop. its very common, and actually will show even lower if you go under load.

This is one of the most perpetuated untruths on this board. What he is seeing is NOT vdroop. vdroop is the drop in voltage seen when the chip goes from idle to load. The difference between the input voltage and and observed voltage is a separate effect of the board and is also normal. The voltage shown in CPUz will be closer to the actual voltage applied to the chip. Keep the voltage read under 1.5 and watch your temps and you should be ok.

 

[Xenozx]

This is one of the most perpetuated untruths on this board. What he is seeing is NOT vdroop. vdroop is the drop in voltage seen when the chip goes from idle to load. The difference between the input voltage and and observed voltage is a separate effect of the board and is also normal. The voltage shown in CPUz will be closer to the actual voltage applied to the chip. Keep the voltage read under 1.5 and watch your temps and you should be ok.

I agree that what shows in CPU-Z is what is being applied to the chip, however, on his particular chip, he should not need that much voltage. In his particular situation, even 1.5 in the bios may be too high. That chip is capible of 3.0-3.4ish, and at those types of clocks on 65nm, 1.45 is more then enough. Setting 1.55 in the bios, to have 1.50 in cpu-z would be overkill.

 

[aethelwulf]

I agree that what shows in CPU-Z is what is being applied to the chip, however, on his particular chip, he should not need that much voltage. In his particular situation, even 1.5 in the bios may be too high. That chip is capible of 3.0-3.4ish, and at those types of clocks on 65nm, 1.45 is more then enough. Setting 1.55 in the bios, to have 1.50 in cpu-z would be overkill.

Sorry, perhaps I wasn't clear. I certainly don't mean he should needlessly add voltage and you are right, he shouldn't need to go to 1.5. I was just saying that it's within Intel spec up to 1.5V. He should minimize the voltage he needs to run stable at whatever speed he's OCing to.

 

[dinosuar]

I tried to lower the vcore but I would get an error right after the windows bootscreen