In many PC hardware test the higher the number the better the performance. Well, that is totally not the case when it comes to our next review. When it comes to most thermal testing the lower the better and that is definitely the case when it comes to thermal paste, compound, grease or whatever you want to call it. We know Prolimatech for their remarkable CPU coolers but they are showing their hands to day with a pair of thermal solutions to help theirs as well as all other CPU coolers. Today, we will be taking a look at their PK- and PK-3 compounds.