EK-TIM Indigo XS is the successor to EK-TIM Indigo Xtreme and represents the latest generation Engineered Thermal Interface (ETI). Fits neatly between a CPU lid and water block (or heat sink) to keep CPUs cooler. Unlike greases, metallic thermal interface pads or liquid metal alloys, Indigo XS™ is a self-contained and sealed structure, deploying a Phase Change Metallic Alloy (PCMA) which reflows and fills surface asperities on the CPU lid and heat sink. Indigo XS™ achieves high thermal performance through the optimized deployment of molten, oxide-free PCMA, thereby yielding low contact resistance and low bulk resistance. The resultant interfacial layer is void-free and robust, with low thermal contact and bulk resistance.