Really??
This is stock btw, it's using 1.36v and temps on 1 R15 run is mid 70s (custom water....yeah right!!)
Something not right there.
Did you default your bios after installation?
My default volt is 1.2v something, 1.28v is good for 4.6Ghz and temps around 68c. 1.35v is good for 4.8Ghz and temps in high 70's/80's depending on bench.
You should be getting much better temps on proper water setup.