this is my setting on air
I have 212 Evo + 4790K ... this is what i notice
your Vcore is what driving the temp. my OC to 4.4 only ( AsRock auto tune on advance setting only)
V = 1.176 = 30-34 C degree - Idle
V = 1.225 = 62-75 C .. but once i a while will go to 81C ( full load AIDA , OCCT , HyperPI stress test)
when i have my
V=1.09 temp only 25C (idle)
V = 1.25 ... the temp shot up to 90 .. average be 68-81 (full load)
i hope this help on figure out your temp.
so your is 1.23 and 80C then it just like my air cooler ... i would expect maybe 5-8 degree cooler for water Corsair h100i
80C is not hot for full load stress test ... it on the warmer side .. hehehehe
but every day use i bet you won't go over 70 and that about 60% load
most everyday stuff run is about 15-40% load only
good luck