it makes your system faster, and it only really shortens the life when its overheating, and if this cpu doesn't overheat as a 6-core closer to 3.3ghz, then it should be able to do at least 3.6ghz no prob, and even if it is shortening the life, not much, these cpus can last veryyy long, i still have a daily used athlon xp, and those came out in 1999, had it since at latest 02, think it was in 01 we got it, and it's a compaq too, although it isn't overclocked, but also you can get a cooler master hyper 212 plus and get that thing at 4ghz for under 30 bucks.