GPU water block ek water blocks EK-Quantum Vector³ Suprim RTX 5090, D-RGB, acrylic top, with backplate

EK-Quantum Vector³ Suprim RTX 5090 is a full-cover GPU water block by ek water blocks designed for direct liquid cooling of NVIDIA GeForce RTX 5090 Suprim series graphics cards. The block features an acrylic top, integrated D-RGB illumination and comes with a matching backplate. It cools the GPU core, memory modules and VRM circuitry as part of a custom water-cooling loop, helping maintain lower operating temperatures under sustained heavy loads.

Advantages

The acrylic top provides a clear view of coolant flow and lighting effects while the full-cover design ensures contact with the GPU core, VRAM and power delivery components for comprehensive heat transfer. Integrated D-RGB lighting is compatible with common motherboard and controller standards for synchronized illumination. The included backplate offers additional structural support and passive cooling for components on the PCB rear. The block is engineered for easy integration into custom loops and for reliable, long-term operation when paired with appropriate fittings and coolant.

Suitable for

• High-performance gaming systems with custom liquid cooling
• Workstation builds requiring stable GPU temperatures under sustained loads
• Overclocked RTX 5090 Suprim cards that need direct cooling of GPU core, VRAM and VRMs
• Showcase builds where visible coolant and D-RGB lighting are desired

Key specifications

• Full-cover water block compatible with NVIDIA GeForce RTX 5090 Suprim series
• Acrylic top for visual clarity of coolant and lighting
• Integrated D-RGB lighting compatible with standard 5V addressable RGB headers
• Includes rear backplate for added support and passive cooling
• Contact surfaces for GPU core, VRAM and VRM components
• Designed for use in custom liquid-cooling loops with standard fittings

How to use

Install the water block following the manufacturer’s mounting instructions and use only the supplied screws, thermal pads and thermal compound where specified. Prepare the PC for water-cooling installation by draining and cleaning any existing loop if replacing another block. Mount the block onto the graphics card ensuring correct alignment with GPU core, memory and VRM contact points, then secure the backplate on the rear of the PCB. Connect the D-RGB header to a compatible 5V addressable RGB header or controller. Integrate the block into the system loop using compatible fittings and tubing, then perform a leak test and fill the loop with recommended coolant before powering the system.

Usage recommendations

Use high-quality, corrosion-inhibiting coolant and compatible fittings; maintain periodic loop checks for leaks and coolant condition. Ensure D-RGB wiring is connected to a compatible controller or motherboard header for proper lighting control. For optimal thermal performance, verify that contact pads (thermal pads and thermal compound) are correctly placed and replaced if damaged during installation.