can't understand all these suggestions of overclocking...it's a luxury not a requirement, and arbitrarily telling someone to do it is dumb.
Agree with your post, with exception to this. We'll have to agree to disagree that's all. I would say that when nearly every major manufacturer includes overclocking utilities with their motherboards, and detailed instructions on how to do it, that it is now mainstream, and it's almost "expected" as a value added sort of thing. It's actually a marketing thing, engineered to make people think they are getting more value for their money, being "sneaky" and getting more than what they've paid for. You can google it and read all about it if you wish.
You're right, it isn't a requirement, but it certainly isn't a luxury. With the 3570k in particular, I won't bother posting all the thousands of charts and benchmarks you can find at your fingertips with google, but suffice it to say, by not overclocking, you're missing out on at least 15 percent, and up as high as 25% in some instances, a full quarter, of the performance available with all kinds of games and applications.
If you were to argue that it could possibly void your warranty, then I would agree with you 100%. You are correct like I said that the OP will see huge performance gains, O/C or not, but just IMO he'll be missing out on that little bit extra. Games like ARMA 3's playable beta/alpha right now that are very CPU intensive, you can see an obvious and measurable drop in FPS when I downclock my 3820 and 3930 systems to stock from their overclocked states, and I imagine it would be the same with the 3570k.
Just my opinion, there isn't a right or wrong answer really. However, calling somebody "dumb" over it is uncalled for, and also a violation of the rules the last time I checked.