i7-7700K hitting 90+ degrees / H55 watercooler

[luanblur]

My build:

OS: W10 PRO x64
MB: Asus Z170-E
RAM: 2x DDR4 4GB HyperX 2800mhz
GPU: GB GTX 970 G1 Gaming
CPU: i7-7700K
PSU: EVGA 600B
Cooler: Corsair H55
Case: BitFenix Ronin Black
Ambient temperature: 34 degrees

Issue:
Whenever I'm gaming, my cpu hits 90+ degrees while on heavy load, even in not so demanding games, like CS:GO, my cpu hits about 73 degrees. Is that common for an i7 with a low budget cooler? It is still a watercooler, and I hope it is better than the coolerbox. I built the PC myself, It's the first time, so I don't know exactly what is causing this overheat.
I'm using an industrial thermal paste, and thinking of gettin an Arctic Silver 5 and see how it goes. The heatsink is mounted properly, I've checked a dozen times and reseated it 3 times just to be sure. Can the overheating be caused by something else apart from the low budget cooler or the thermal paste?

 

[atljsf]

h55 is kind of small for a i7, so those temperatures are to be expected, where did you located the radiator and fan of that cpu?

for that cpu as 240 mm radiator was better

what other case fans do you have?

 

[Lopperuk]

90 degress on water cooling? must be broke mate, just buy a cheap air cooler like the Cooler Master TX3 or 212 EVO and see if it's still overheating.