Mine doesn't. It runs oddly cold for some reason. Its not due to water cooling alone. These Broadwell chips run cool. Sandy-E took more cooling muscle than their quad core counterparts. With the advent of toothpaste TIM on newer quad cores, the enthusiast line runs cooler than the quad cores these days from what I can tell. There is no straight answer to your question without considering what generation of chips you are referring to. If all else is equal, then yes a 6 core will run hotter than a quad simply because there's two extra cores putting off heat. Things aren't equal these days though.