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 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