I managed to snag this CPU, used, for a mild upgrade to my aging 4770 system (non-K). When I installed it, I noticed a fairly gnarly scratch on the bottom of the CPU cooler, that I'm wishing I took a picture of now... but decided to install anyway since it never gave me an issue with my 4770. The cooler is a Noctua dual tower, btw. On stock clocks, everything looks great. Idle temps are around 28-32* and in Cinebench under 100% load, doesn't get above 60*. In my BIOS/UEFI, I kept everything on auto and just bumped the CPU multiplier from Auto, to 45 (4.5ghz total;100mhz over stock boost clocks,). At idle, temps are pretty much identical to stock but under load, in cinebench, temps climbed close to 90* on two cores in particular (which I should note, were 25-30* hotter than the other two). In Prime, they instantly hit 100* so I shut it down. Do these chips just run naturally hot? I assumed I'd be able to get 100hmz out of it at least. Could it be a problem with that scratch on the cooler? Or am I doing something wrong with the overclock? I've never attempted OC'ing haswell before, so this platform is new to me.