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

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9 May 2005
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Devon
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
 
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