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Voltages and what it does to the CPU lifespan

Last response: in Overclocking
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February 12, 2010 5:33:52 AM

So I'm fairly new at overclocking.. bear with me :) 

I got a core i7-860 set up with an Asus P7P55D-E Pro motherboard and 4 Gigs of 1600Mhz DD3 ram.
I managed to get a simple OC of BCLK to 160 (came from 133), but left the CPU voltage on auto.
I kept EIST and C1E on, but noticed that my CPU voltage doesn't drop when idle (according to CPU-Z) (although the multiplier does - thanks to EIST).

Since it now autosets around 1.2V instead of the default 0.8V-0.95V, I was wondering if this will shorten the lifespan of my CPU easily, or if I don't really have to worry about it at such Voltages?

More about : voltages cpu lifespan

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a b à CPUs
a b K Overclocking
February 12, 2010 6:33:11 PM

You don't need to sweat it at that voltage.

Naturally the lower the voltage required to keep a system stable the better but you're well below the processor maximum rating of 1.4V.
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February 12, 2010 11:42:49 PM

Ok thanks!
And shouldn't C1E lower my voltages when idle too?
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February 13, 2010 1:04:23 AM

Falx said:
Ok thanks!
And shouldn't C1E lower my voltages when idle too?


On a lot of boards, it won't when set to "auto" if you OC. Switch it to "Enabled" and you should be fine...
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a b à CPUs
a b K Overclocking
February 13, 2010 1:04:59 AM

The voltage change is due to the power saving feature "speed step technology".

In order to keep voltage constant, you need to disable speed step by turning off C1E, C3/C6/C7 and EIST.
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February 13, 2010 6:37:26 AM

Best answer selected by Falx.
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February 13, 2010 6:37:35 AM

Ok thank you all!
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a c 207 à CPUs
a c 148 K Overclocking
February 13, 2010 5:25:55 PM

More voltage is generally req'd to overclock. The newer i7 chips can be substantially undervolted even while being OC'd. For example, my son runs an everyday OC (365/24) at 3.7 Ghz (over the 2.66 stock) at only 1.125 volts to the CPU and 1.56 volts to the memory
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