Micrometers exist for the sole purpose of measuring very small distances, hence the ?micro? being used as a prefix. Many users new to liquid cooling are often confused by just how little often separates one component from another, which is most prevalent in CPU blocks. The incredible tales of 20 degree differences between current top name blocks are just that, nothing more than incredible tales. When put under identical conditions, only a few scant degrees separates the best from the worst, which is why other factors weigh so heavily in choosing a block. Materials that will be cooperative with the rest of your loop is a must, and restriction needs to play a major factor, especially for those using smaller pumps. And, of course there is the eye candy, which in today's market has become a huge part of the process. With the new Supremacy EVO, EK Waterblocks may have possibly covered more of these bases than any other CPU block that has come before it.