EK Pro GPU WB H200 NVL Workstation GPU Block

The EK Pro GPU WB H200 NVL GPU Water Block is a high performance, full cover cooling solution engineered specifically for the NVIDIA H200 NVL Tensor Core PCIe GPU. Featuring a single slot rack style design and a dual-pass cooling engine, this water block delivers maximum thermal efficiency and is designed for compact server or workstation environments.

Features

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EK-Pro GPU WB H200 NVL

The EK-Pro GPU WB H200 NVL is a high-performance full-cover water block designed for the NVIDIA H200 NVL Tensor Core PCIe GPU data centre graphics card. It was specifically engineered to make the entire GPU and water block assembly as thin as possible, effectively allowing it to consume only a single PCIe slot. The water block is equipped with a rack-style terminal, significantly reducing the assembly height and enhancing chassis compatibility. EK-Pro Rack GPU water blocks adhere to the standard Full Height Full Width (FHFW) server chassis form factor, making them convenient drop-in replacements for both active and passive dual-slot air coolers.

By covering the entire PCB, the water block directly cools the GPU, HBM VRAM, and VRM (voltage regulation module) as the cooling liquid is channelled precisely over these critical areas.

Dual-Pass Cooling Engine

The product features a dual-pass cooling engine design. The coolant goes through one microfine stack, which cools the first half of the GPU die + HBM memory stacks on one side, then continues to the next microfine stack, which cools the other half. The focus was to maintain a high flow velocity through all microchannels (as opposed to a single-pass design, which would effectively halve the flow rate). The fin structure geometry has been optimised to ensure balanced flow distribution with minimal losses, even in reversed water flow scenarios.

To enhance the stability and protection of the graphics card, the I/O plate is integrated into the water block’s top. This means that the block replaces the stock I/O shield, adding substantial rigidity to the entire assembly. The integrated single-slot I/O plate also benefits compact workstation and server environments where space and PCIe slot spacing are limited. This design allows the card to occupy only a single PCIe x16 slot, freeing up surrounding slots for other add-in cards.

The water block comes with an aesthetic retention backplate that improves the visual appeal and structural rigidity of the graphics card while providing passive cooling to the backside of the PCB VRM area. Cutouts in the water block top and backplate ensure full compatibility with the NVIDIA NVLink connector.

The EK-Pro GPU WB H200 NVL water block features a POM-machined terminal block at the back with two G1/4” ports, enabling easy integration with EK-Pro QDC kits and manifolds for high compute density applications.

The base of the water block is CNC-machined from nickel-plated electrolytic copper, while the top is laser-cut from industry-grade stainless steel. The top plate includes a screw-in PCIe power connector bracket, ensuring a secure power connection. High-quality EPDM O-rings guarantee reliable sealing, and pre-installed brass standoffs ensure a safe and straightforward installation process.

Please Note

• Due to the immense variety of fittings/barbs available on the market, EK Waterblocks guarantee compatibility only with EK fittings.
• Factory backplates are not compatible with this water block! Use only the backplate that comes in the package.
• This product should NOT be installed with any aluminium liquid cooling parts!
• The use of specifically engineered coolants that contain corrosion, scale, and biological inhibitors is mandatory to prevent damage to your nickel-plated water block! EK offers a selection of such products in the coolants section.