Reduced to clear! (normally $185) The EK-FB ASUS M6E water block is a complete liquid cooling solution for ASUS Maximus VI Extreme motherboard. The water block directly cools the Intel Z87 southbridge (PCH), PLX PEX 8474 PCIe lane splitter as well as power regulation (VRM / MOSFETs) module. It is a high flow water block that can be easily used with systems using weaker water pumps.