EK-Quantum Vector³ Custom Liquid Cooling Block for MSI NVIDIA RTX 5090 Suprim

EK-Quantum Vector³ Suprim RTX 5090 - Plexi GPU Water Block

The EK-Quantum Vector³ Suprim RTX 5090 - Plexi is a premium full-coverage liquid cooling block engineered by EKWB specifically for the MSI GeForce RTX 5090 32G SUPRIM SOC and MSI GeForce RTX 5090 32G SUPRIM OC graphics cards. Designed to replace the stock air cooler, this water block provides exceptional thermal performance by directing coolant over the GPU core, video memory, power delivery circuitry and additional hotspots on the PCB to maintain lower operating temperatures under sustained load. Built with high-end materials including a nickel-plated electrolytic copper coldplate, a CNC-machined Plexi top, and a black anodised aluminium backplate, the Vector³ Suprim RTX 5090 integrates into advanced custom liquid loops via dual G1/4" threaded ports for guaranteed compatibility with standard fittings and manifolds. Conforming to the EK-Matrix7 standard, it simplifies tube routing and loop planning for both vertical and horizontal GPU mounting, while addressable D-RGB lighting compatible with mainstream motherboard sync technologies enhances system aesthetics.

Advanced Cooling Engine

This Vector³ water block features an optimised Open Split-Flow cooling engine with an expanded fin array and precision coolant pathways to deliver uniform distribution and reduced hydraulic restriction for maximum heat dissipation. Active cooling is applied to the GPU core, VRAM and power stages, while the included backplate contributes passive cooling to additional board hotspots, enabling stable performance even in demanding workloads or overclocked conditions.

Premium Materials and Seal Integrity

The coldplate is constructed from nickel-plated electrolytic copper to ensure high thermal conductivity with long-term reliability, paired with a CNC-machined Plexi top that provides a crystal-clear view of the coolant flow and RGB lighting. The water block uses a refined single O-ring seal design, reducing potential failure points, and a new gasket system that helps prevent solid particles accumulating between the coldplate and top, preserving optimal cooling efficiency.

Backplate and Structural Support

An included black anodised aluminium full-coverage backplate not only enhances the visual appeal but also helps passively cool PCB hotspots such as VRAM and power delivery circuitry. Its L-shaped profile fully encloses the GPU for a clean, unified aesthetic and increases overall structural rigidity, while pre-installed captive screws simplify installation.

Loop Integration and Connectivity

The EK-Quantum Vector³ Suprim RTX 5090 is fitted with dual G1/4" threaded ports for integration with standard liquid cooling loops, compatible with a wide range of fittings and quick-disconnect systems. The block follows the EK-Matrix7 standard, aligning ports and spacing for intuitive tube routing, effortless loop planning with EK-Quantum Reflection² distribution plates, and clean layouts regardless of GPU mounting orientation.

D-RGB Lighting Compatibility

Addressable D-RGB lighting is integrated along the longest edge of both the block and backplate, providing uniform illumination that is compatible with popular motherboard RGB sync technologies through a standard 3-pin 5 V digital LED header. The concealed PCB and diodes within an aluminium extrusion enhance the block’s sleek aesthetic while allowing customisable lighting effects.

Important Notes:

1) Due to an immense variety of fittings/barbs available on the market and no prescribed standards, EK guarantee compatibility only for connectors from themselves.
2) Factory backplates are not compatible with this water block!
3) This product should NOT be installed with any aluminium Fluid Gaming parts!
4) The use of specifically engineered coolants that contain corrosion, scale, and biological inhibitors is mandatory to prevent damage to your nickel-plated water block.
5) This product is compatible with EK-Quantum Scalar² Terminals, but will no longer be Matrix7 compatible if stock terminal is replaced.
6) To leak test the EK-Quantum Vector³ water block, EK recommends 0.6 (+/-0.05) bars of pressure for 2 minutes.

• Full-coverage liquid cooling block for MSI Suprim RTX 5090 GPUs.
• Optimised Open Split-Flow cooling engine with expanded fin array.
• Active cooling for GPU core, VRAM and power stages.
• Nickel-plated electrolytic copper coldplate.
• CNC-machined Plexi top with visual coolant display.
• Single O-ring seal and advanced gasket system.
• Pre-cut high-performance thermal pads included.
• Black anodised aluminium full-coverage backplate.
• Dual G1/4" threaded ports for standard loop connectivity.
• EK-Matrix7 standard for simplified loop planning.
• Addressable D-RGB lighting compatible with motherboard sync tech.