A water block is the watercooling equivalent of a heatsink. It can be used on many different computer components, including the CPU, GPU, RAM, and Northbridge chipset on the motherboard.

EK®, the leading computer cooling solutions provider ... enclosure in order to even out the entire weight distribution of the water block. The watertight sealing is ensured by high-quality ...

EK®, the leading computer cooling solutions provider, is launching the new EK-Quantum Vector Red Devil water block made for ... optimized to provide even flow distribution with minimal losses ...

Are you using, planning to use, or have used (and abandoned) water cooling on your hot end? The most common method is to use a heat-break between the heating block and the rest of the filament path.