great job....guess that run puts you in extreme class

or since its "just water cooling" you can easy add a core temp screen if you are not going sub zero since you are obviously sub ambient

It is easy obtainable on water cooling,you just need a good cpu.

 

http://hwbot.org/submission/2639934_suzuki_superpi___32m_core_i7_4790k_5min_31sec_625ms

 

I filmed the whole thing,it was for a contest,the coretemp runned for the whole period of time,it was capped at 10 degrees/