Bykski GPU Water Block & Backplate RTX 3080/3090 N-RTX3090H-X-V2

Targeted GPU Cooling Upgrade

This full-coverage water block and backplate kit is built for custom-loop builders who want direct liquid cooling on the GPU core, memory and voltage regulators of specific GeForce RTX 3080 and 3090 models. It replaces the factory air cooler to lower component temperatures and support higher sustained clocks. The nickel-plated copper base and acrylic top deliver efficient heat transfer with visible coolant flow.

Verify Exact Card Model First

Compatibility is limited to the exact reference-design cards listed by the manufacturer, including select 10 GB, 12 GB and 24 GB variants from Galax, Leadtek, Manli and PNY. Any other RTX 3080 or 3090 model, even from the same brand, will not fit. Check your card’s precise model name against the supported list before ordering, as PCB layout differences prevent installation on unlisted boards.

Sustained Thermal Performance

The high-flow internal channel design keeps coolant moving efficiently across the core, VRAM and VRM during extended gaming or compute sessions, preventing the heat soak that limits air coolers over time. Multiple blocks can be plumbed in series or parallel without excessive restriction, so loop order flexibility is maintained. The aluminium backplate adds structural rigidity without contacting the fluid path.