Their design and calcia or yttria stabilized zirconia composition makes them ideal for high temperature cycling* environments. The Assassin III is yet another air cooler that looks like a brick and that weighs as one. But, being the flagship CPU also means high power consumption and high operating temperatures compared to other CPUs.
Normal or soft bisque for high firing stoneware, porcelains & mid-range clay bodies. Low fire clays mature (Terra Cotta, Low Fire White & Earthenware).