It should last a good 5 to 10 years even with an OC.
I'll agree. However, even with the CPU lasting 5+ years, don't expect the system as a whole to make it that long. I have found that the most likely weak link is your mobo (especially with budget mobos). Overclock and forget about it. You will upgrade incrementally anyways over the 5 + years and get a lot of performance in the mean time.
To summarize- push the button.
Inignot- drinking and stealing and smoking in a non smoking area
Inignot- I am going to give him a pride obliterating b*tch slap.