What is the LiquidStack GigaModular CDU?
GigaModular is a large coolant distribution platform for phased artificial-intelligence and high-performance-computing sites. It joins several coolant distribution unit (CDU) blocks under one set of controls. A site can add blocks as new compute arrives. LiquidStack lists 2.5 MW modules. It says full-load tests proved that linked modules can run at up to 14 MW. That test does not promise 14 MW at every site. Water temperatures, glycol mix, pipe loss, and the site's spare-capacity rule will change usable output. The company says the platform is built for NVIDIA Vera Rubin requirements and several types of silicon. Buyers must still check the exact limits for their servers and water loops. ETL certification covers safety rules; it does not prove thermal fit or uptime. The release does not give module size, power draw, pump curves, approach temperature, pipe sizes, water limits, lowest stable load, or a full controls list. It also does not show which faults the shared design can withstand. Ask how loads and controls are split between blocks. Check whether a common pipe or controller could stop several modules. Confirm that one block can be shut off and serviced while the rest stay live. Before valuing the pay-as-you-grow claim, also check delivery order, factory tests, expansion work, spare parts, startup roles, and links to the site control systems.