That CPU would hard to get below 37 degrees celcius with standard thermal coolers but water cooling would be your best option, make sure you have and insane radiator, liquid nitrogen would be a useless idea as it cost a lot and it disipates as you would need to keep filling it again and again. Look at the Corsair H100 water cooler, it has a large radiator with two 120mm fans and its ready made to be installed, no need for pipe and fluid installations...top fav water cooler 100%