The i7-2600K is the last of Intel's quad core generation of chips; and they definitely saved their best chip until last. So, after a long run of chips which never quite lived up to their hype, the 2600K is truly blazingly fast, and I'd definitely not be in the slightest bit be interested in their hex core chips because this one is, frankly, THAT brilliant. Now, I know what you're thinking - why should I buy this quad core when the hex core is around the corner? Good question, save that the first generation of hex cores should be considered as a 'trial run' for the later generation, just as these 2600K's are the perfect best, albeit last in the quad core release line, after their over-hyped earlier Q6600's, i7 920's etc.
So you're buying Intel's most perfected quad core chip, as opposed to your waiting to buy the first generation chips which will undoubtedly be overtaken by later released hex cores. Thus, you should buy the best of something while you can (and look at just how quickly Intel pull off chips from the market when it suits them to do so!) rather than wait for the un-perfected first gen of hex cores. Surely that makes sense to you as it does to me?
Past chip release history guarantees that, at best, it'll take well over 5 years before they're even close to releasing a chip which smokes these utterly brilliant 2600k's at everything. And I was never as happy with a chip as I am with these 2600k's. Mine is running at around 30 degree while idle and barley hits 70 degrees on full load with after-market cooling Cooler Master Hyper 212 Plus Cooler
. I recommend that you bin the supplied heatsink and fan as it is absolute rubbish - my temps were hitting an egg frying 90 degrees, with stock cooling, on load! Allegedly, Intel were clever enough to supply the first few thousand of these with decent cooling - knowing well that those would be the ones that would hit reviewer's desks first. Very cunning indeed! But one thing hasn't changed, as this chip matures on the market: speed.
Complaining that the 2600K is not fast enough is like complaining that your new Ferrari has mediocre performance. That's how fast this chip is in real world terms. Besides... who needs Ferraris, when you've got a 2600K parked in your board!? ;-))