Life span doesn't matter. It has what a ten year life span and overclocking doesn't reduce it that much. Even if it reduced it by 50% which is way off from the real number, that would still be five years! I will only have this system for 2 years max! Anyways, even if I only get to 2.5ghz, that will still be alot faster than 2.0ghz. I believe you can only fry these chips with too much voltage. Obviously heat is an issue but I will have a Zalman CNPS9500 which should cool very well since it will straight in line with the two 120mm fans I have double stacked in my lower cd-drive bays (mesh grill). It will be sucking in 70 degree farenheit air which should cool it very nicely, and suck all the hot air out with the two more 120mm fans I have double stacked in the rear.