Corsair CX-9020026-WW Hydro X Series RTX 4090 Water Block

The Corsair iCUE LINK XG7 RGB 40-Series GPU Water Block (CX-9020026-WW) is a purpose-built cooling solution for the MSI GeForce RTX 4090 SUPRIM and GAMING TRIO graphics cards. Its CNC-milled nickel-plated copper cold plate features more than 50 high-density cooling fins positioned directly over the GPU die, delivering maximum thermal transfer and surface area. Unlike air coolers or AIO solutions, this total conversion block replaces the stock cooler entirely, drawing heat away from the GPU, VRAM, and VRM through a single integrated water path. The result is lower temperatures under sustained load, which allows the card to maintain higher boost clocks and deliver more consistent frame rates.

Beyond raw performance, the block is designed with aesthetics and convenience in mind. A transparent flow path lets you watch coolant circulate through the block, while integrated RGB lighting adds a visual accent that can be controlled through three different methods: the iCUE LINK ecosystem for daisy-chained single-cable setups, a standalone iCUE controller, or the included 5V ARGB motherboard adapter for direct header control. The full-length aluminum casing and included backplate give the card a polished, finished look once installed. With pre-applied thermal material and detailed instructions, the block is accessible to builders who are new to custom loops while still meeting the expectations of experienced enthusiasts.