CNC Machined Copper Liquid Cold Plate for GB300 GB200 GPU Ai Server

A drawing in STEP / IGES / DWG / PDF is the fastest route, since it fixes footprint, mounting geometry, port positions and thread standard. If the design is not finalised, we can start from operating conditions: heat load per device, coolant type and inlet temperature, the pressure drop your loop can allow, and the rack or enclosure envelope. DFM review is completed before quotation.

Coldwerk delivers at cold plate and component level. Where a project extends to manifolds, hoses, quick disconnects or loop-level layout, project coordination is available and the delivery content is defined per project.

Copper is usually chosen on the chip side, where heat has to spread out of a small die footprint before it reaches the coolant. Aluminum is chosen where mass, machining cost or an aluminum-compatible loop weighs more heavily. The decision is not only thermal: mixing metals in one loop makes coolant chemistry and inhibitor selection part of the design, so we ask what the rest of your loop is made of. Both are available and confirmed per project.

The closing process is selected per design. In-house processes include CNC machining, skived fin, extruded profile, embedded tube and brazing. Where a design calls for microchannel geometry, friction stir welding or vacuum brazing, these are available for your project and executed at qualified partner facilities within our Dongguan manufacturing base, with Coldwerk retaining engineering review, process selection, inspection and single-point accountability.

Nitrogen leak and pressure testing and CMM dimensional inspection are carried out in-house. Helium leak testing is available for your project at qualified partner facilities within our Dongguan manufacturing base. Test pressure, hold time and acceptance criteria are set by your drawing or the project test plan rather than by a catalogue figure.