post #21 of 21
Quote:
Originally Posted by Blameless View Post
Current draw is directly dependent on frequency and has a significant impact on CPU (and other components') life.
Current and Frequency definitely play a role, but voltage has a much greater impact.
At the end of the day, a lifespan of a CPU is determined by the silicon degradation rate, and the 2 factors that affect that the most are heat and voltage.

You can shoot as many electrons as you want through a CPU (ie current), but if their energy isn't high enough to cause the electrons to leave their quantum energy levels, you won't have appreciable tunneling. On the other hand, even if you only shoot a very few electrons through (low current) if they have enough force behind them, it can cause rapid tunneling.

Back to my throw ball at door analogy. You can throw 50 balls at the door at 20mph and not cause damage (high current), but if you throw 5 balls at 80mph(high voltage), you just might break through it.

Now in a CPU, F and v are directly linked, but as I posted earlier, the V component to PD increases exponentially, while the F component remains linear, causing it to become less and less significant the more v increases.
Edited by banthracis - 7/26/11 at 9:04am
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