Noob help required - difference between bios and cpu-z voltages

Slackjaw190 · 12 Jun 2018 at 23:24

My old system core duo 2 e6600 and 965P-DS3P motherboard have been running at 3GHz happily for years.

Yesterday I thought I would see if I could squeeze 3.2 out of it and bumped the voltage up to 1.43125v in the bios to allow this. However, CPU-Z and HW monitor show my core as 1.392v.

My question is, when overclocking should I be using the bios or cpu-z voltage values and why is there such a difference?

I think the recommend safe voltage of these old chips is 1.5v but is that the bios or cpu-z reading

Thanks,

Slack

LuckyBenski · 13 Jun 2018 at 07:29

Is that the voltage under load?

Slackjaw190 · 13 Jun 2018 at 07:59

LuckyBenski said:
Is that the voltage under load?

Yes - during IntelBurn

LuckyBenski · 13 Jun 2018 at 08:29

What's your VID appearing as? What was the previous voltage setting? Just speculating that it may not be needing to raise the voltage that high to achieve those clocks. But it's unlikely if you already felt the need to raise the voltage.

Slackjaw190 · 13 Jun 2018 at 08:39

I'll have a look when I get home tonight, I was thinking the voltage seems rather high

Slackjaw190 · 13 Jun 2018 at 23:23

VID = 1.325v as shown in bios or 1.296v in CPU-Z

For 3.0GHz it requires 1.35V in bios or 1.312v in CPU-Z to be stable

Armageus · 13 Jun 2018 at 23:29

Bios figure is what is requested, cpuz figure is what is being supplied after vdroop.

LuckyBenski · 13 Jun 2018 at 23:38

It's kinda weird that your VID is appearing differently in different places, surely? It's not a voltage reading, it's an identification label.

Slackjaw190 · 14 Jun 2018 at 22:24

Armageus said:
Bios figure is what is requested, cpuz figure is what is being supplied after vdroop.

So if the maximum safe voltage is sat 1.5v, should I be using the bios reading or CPU-Z?

Armageus · 14 Jun 2018 at 22:31

The reading from cpu-z

Slackjaw190 · 15 Jun 2018 at 21:42

Armageus said:
The reading from cpu-z

Thanks