Kitguru just tested seven thermal pastes; Arctic Silver 5 and Céramique 2, Cooler Master's MasterGel Pro, Cryorig CP15, EKWB Ectotherm and Thermal Grizzly Kryonaut.  They wanted to see what performance difference, if any, existed between them for no matter how effective your cooler is, it can't dissipate heat that is not transferred to it from your CPU.  Their test was conducted with a i7-4790K CPU and Cooler Master Hyper 212 LED CPU Cooler and the results show that the incumbent is not necessarily your best choice.

"Following on from our previous articles about fan configuration and static pressure vs airflow fans, today we are looking at thermal paste. Specifically, we are hoping to find out whether or not choosing different types of thermal paste actually makes any difference. To do this, we test 7 products from 6 companies to see how much difference thermal paste really makes."

Here are some more Cases & Cooling reviews from around the web:

CASES & COOLING