The Highlander said:
I want the chip to last a little over a year!!!
It's impossible to tell how long a CPU will last. You can measure how long a sample of CPUs running under the same conditions will last on average, but there will always be a random deviation around this mean.
For example, your particular chip may have an average life of two years, and a large proportion of people will observe chip lives close to the average, but you will always have outliers (very lucky or unlucky people) where the chip lasts 10 years or one month.
Basically there's a standard normal-distribution/bell-shaped curve and so you can't accurately predict how long a specific CPU will survive.