I have my system on the bench right now so I ran it at the original 1.18v 4250MHz(125MHz bus) and cache with a worst case scenario of a GPU in the loop(idle) and only a 280mm slim rad. 62c max in RealBech.
Aquacomputer Cuplex Kryos
Black Ice Nemesis GTS Stealth 280
Noctua Redux 1500rpm
Thermal Grizzly Kryonaut