The last post I made probably sounded different than I intended it too. What I said about the harddrive was not intended to be accusing or insulting. I actually thought it was pretty funny and I actually have not heard of someone doing that before especially when they were able to get the rest of the system built.
And in a low end gaming rig where the gpu is only a 6870 getting a 2500, or a 2400 will give you around the same performance as a 2500k, The best way to have probably worded it (besides telling people to go die in a hole and forget themselves) probably should have been "You do not need to have the 2500k to overclock a processor. The k at the end (like all of intel's other processors with a "k" at the end) notifies the buyer that the processor has an unlocked multiplier".
Although I will admit that processors without the K don't have very much room for overclocking that does not make them useless. It's rather annoying when people assume right away that the individual (almost always a first time builder) will be overclocking their processor to 4ghz. Not only will overclocking cost more, but it also risks the system that is being built. Assuming that the majority of people who request parts list are unemployed and are getting a computer because one of their parents agreed to buy them one for Christmas or their birthday, then a failed overclock would not only piss the parents off, but it would simultaneously leave the child without a working computer and a waste of time and money.
If you put the pieces together than I think that there are quite a few good reasons why using "teh i5 2500k will allow u 2 overclock to 5ghz so you cane play games faster" is not something that should be a deciding factor. I also think that it's worth noting that to do a safe overclock and keep temperatures ideal a rather beefy cooler would be necessary. The Hyper 212+ is great, but when you assume that these people don't have an income than the $25 could be spent elsewhere. Spending the extra money to overclock what not give you any significant performance increases, at least compared to spending it on a graphics card or on a better PSU.