The I7-3930K Hexa-Core loses to the i7-2600k in some games. This is updated?
The difference between them is so small that it does not matter. Most people buy the I5 since it has the same gaming performance and spend the difference on better GPU which has more to do with performance. In your case GTX680 is good.
Most games don't benefit from overclocking. Several do.
I have a GTX680 and still use an i7-860 but most of my games are hitting 60FPS at max settings. Even Witcher 2 is maxed out (I think "uber" is off) and hitting 60FPS.
I know he says he doesn't "want" an i5 though he doesn't say why.
The i5-3570K is my choice. For about $100 more the i7-3770K is hyperthreaded sure, but it doesn't matter for gaming. I turned HT off in my i7-860 unless I do a lot of encoding.
I have a couple games that run in the 50's for frame rate but hit 60FPS if I overclock the CPU. Otherwise, I use the STOCK settings for the CPU so that:
a) it runs cooler
b) the power managment (drop voltage and frequency) kicks in and it runs cooler yet again
It's not just the noise, I have a small bedroom so the heat is noticeable if I overclock. It's actually worse in the winter with the windows all shut than in the summer (unless they're shut for air conditioning.)