GPU WORLD · GW-LC-SRV-4GPU-D2C
Four-GPU liquid cooling
Direct-to-chip cooling for a four-accelerator server. Share your server configuration and site conditions so GPU WORLD can review mechanical fit, coolant flow and heat rejection before quoting.
COMPATIBILITY REVIEW
Start with the exact server
H100 SXM and H200 SXM are separate configurations. Each requires a cooling assembly matched to the exact four-GPU baseboard, board revision, mounting points and chassis. PCIe cards and eight-GPU systems require their own review.
- Accelerators. Confirm the GPU model, form factor, baseboard and configured power limits.
- Processors. Confirm CPU model, socket, mounting hardware and whether CPU cold plates are required.
- Server fit. Check cold-plate clearance, hose routing, rack space and airflow for memory, storage, power supplies and other air-cooled parts.
- Supplier evidence. Review fit drawings, assembly part numbers, approved coolant, thermal data and pressure-drop curves.
CONCEPTUAL COOLANT FLOW
From the cold plates to heat rejection
The equipment coolant circulates in a closed loop. The coolant distribution unit (CDU) drives flow and transfers heat to room air or to a separate facility-water loop through a heat exchanger.
- 01 · CDU to supply manifold
The pump moves conditioned coolant to the server supply manifold.
- 02 · Manifold to cold plates
The manifold distributes coolant across the GPU branches and any CPU branches specified in the design.
- 03 · Return manifold to CDU
Warmer coolant returns to the CDU. It rejects heat to air or facility water before recirculating.
WORKED SIZING EXAMPLE
3.5 kW of device heat
Four H200 SXM GPUs at 700 W each and two example CPUs at 350 W each add up to 3.5 kW. If all of that device heat enters a water loop, a 5 K temperature rise corresponds to about 10 L/min total flow.
- Assumptions. The calculation uses water and covers the six example devices. Size air cooling separately for other server loads and any heat that remains outside the liquid loop.
- Branch flow. Use each cold plate’s minimum flow and pressure-drop curve, then match the pump to the assembled loop.
- Site duty. Check CDU performance at the actual coolant and room-air or facility-water temperatures. Confirm approved coolant, water quality and condensation controls.
PROJECT SCOPE
What the quotation covers
The quotation lists the confirmed part numbers, quantities, interfaces, and responsibility for installation and support.
- Server cooling assembly
Specify four matched GPU cold plates, mounting hardware, manifolds, hoses and connectors for the selected platform. Add CPU cold plates where required.
- Heat rejection and monitoring
Define the CDU and whether it rejects heat to room air or facility water. Specify filters, isolation, leak detection and telemetry for the project.
- Site work and support
Agree who supplies facility connections, power, rack work, commissioning, spares and ongoing maintenance. Record warranty terms for the selected assembly.
QUALIFICATION AND ACCEPTANCE
Agree on the test plan before ordering
Set acceptance limits with the engineering team and supplier for the selected hardware, coolant and site. Agree the test load, duration and required evidence.
- Design review. Approve the exact assembly, coolant operating limits, thermal assumptions and mechanical layout.
- Factory acceptance. Confirm assembly fit, leak-test results, branch flow and temperatures under the agreed load.
- Site acceptance. Verify heat rejection, alarms, and the response to low flow, a leak or loss of cooling. Record results and hand over the operating procedure.
- OCP guidance on coolant distribution · ASHRAE commissioning guidance
CONFIGURATION & QUOTATIONSRequest a cooling quoteShare your server configuration and site conditions.Request a quote
Plan your cooling project
Our team will review server fit, heat rejection and the scope of supply.