Raymnmod RTX 4090 Founders Edition GPU Water Block

Full-coverage block for RTX 4090 FE

This full-coverage water block fits the NVIDIA GeForce RTX 4090 Founders Edition and cools the GPU core, memory and voltage regulator modules in one piece. It is built from nickel-electroplated high-purity copper with an acrylic top and includes a black anodised aluminium backplate that stays outside the coolant path. G 1/4 in. thread ports on the top and bottom allow parallel or serial loop layouts. The package includes the block, backplate, two stop fittings, mounting hardware, thermal grease and a 5 V addressable RGB light.

Replaces the factory air cooler for lower temps

Swapping the stock cooler for this block removes the original heatsink and fans, letting liquid carry heat directly from the core, memory and VRM. The high-flow internal design supports running several blocks in series without a large pressure drop. The result is lower load temperatures, reduced fan noise and extra thermal headroom for higher clock speeds or simply running the card cooler than stock for longer component life. Verify the exact PCB layout before purchase, as multiple board revisions exist.

For custom-loop builders with an RTX 4090 FE

This block suits enthusiasts building a custom water-cooling loop around an RTX 4090 Founders Edition card who want full-component coverage and flexible port placement. It is not for owners of partner-board models, since the mounting pattern and component layout differ. Buyers without a pump, reservoir, radiator and tubing already planned should look elsewhere, as the block alone does not cool the system. The included 5 V addressable RGB connector requires a compatible motherboard or controller header; 12 V RGB headers will not work.