please specify if you guys are referring to core temps, or socket temps..
i assume you are all referring to socket temps, as i don't think the nf7 reports core temps.
if your socket temps are 52c.....i wonder what the core is at.
at the moment, my pc is running over 2 vcore, and my core is at 58c full load, running f@h, but the socket is 36c.
as you raise your voltage, your socket may rise a few degrees, but the core will rise much more rapidly. at stock speeds, and vcore, my core is only a few degrees higher than the socket, and doesn't go much higher at load, but at 2 vcore and higher, i see a 20+ c rise.
so, if you don't know the core temps, you have to then guess based on what the socket temps are, and the vcore.
as for expecting to overclock , and overvolt, and also expect the chip to last forever, is just asking too much out of the chip....imo