Hi everyone! I have got a watercooling system (Antec Kuhler H2O 620). I would like to overclock my i7 3820 to 4.3ghz or better. But temperatures of the cores with 4.2Ghz are already high, around 80 ° C. I need a new cooling system? Or I can bring more fans in series in the radiator? Or buy a higher rpm fan?