Water block EK Water Blocks Quantum Vector RTX 3080/3090 — Acetal/Copper, Black, 220×124×20.5 mm

EK Water Blocks Quantum Vector RTX 3080/3090 full-cover water block is engineered for liquid cooling of NVIDIA GeForce RTX 3080 and RTX 3090 graphics cards (reference PCB designs, excluding Founders Edition). The block combines a CNC-machined electrolytic copper cold plate with a black POM acetal top to directly cool the GPU core, VRAM and VRM components. With dimensions of 220×124×20.5 mm and a thicker copper base to clear tall capacitors on many reference cards, this second-generation Vector block offers broad compatibility while maintaining low hydraulic restriction. The Open Split-Flow cooling engine, optimized jet plate and a 27-microfin array with 0.5 mm microchannels deliver even coolant distribution and efficient heat transfer. The assembly includes pre-installed brass standoffs, EPDM O-rings for reliable sealing and fittings-ready ports; the product is made in Slovenia.

Advantages

The copper cold plate provides direct, high-conductivity contact with GPU, VRAM and VRM, improving thermal dissipation compared with air cooling. The optimized Open Split-Flow design and jet plate geometry reduce hydrodynamic instabilities and minimize flow restriction, allowing effective operation with lower-speed pumps. A thicker copper base increases mechanical clearance for tall capacitors on reference PCBs and the acetal top and terminals in black offer a uniform aesthetic. Pre-installed brass standoffs and high-quality O-rings simplify installation and enhance long-term leak resistance.

Suitable for

• Liquid cooling setups for NVIDIA GeForce RTX 3080 and RTX 3090 reference-design graphics cards
• High-performance builds seeking lower GPU temperatures and reduced thermal throttling
• Custom loop systems where low hydraulic restriction is required (weaker or low-speed pumps)
• Users planning to combine GPU blocks with retention backplates for additional passive cooling

Key specifications

• Form factor: full-cover GPU water block for reference-design RTX 3080/3090 graphics cards
• Materials: CNC-machined electrolytic copper cold plate; black POM acetal top and terminals
• Cooling coverage: GPU core, VRAM, VRM, MOSFETs and chokes
• Cooling engine: Open Split-Flow with optimized jet plate and fin geometry
• Microfin array: 27 microfins with 0.5 mm microchannels
• Dimensions: 220 mm (depth) × 124 mm (height) × 20.5 mm (width)
• Sealing: EPDM O-rings; pre-installed brass standoffs
• Finish: black acetal top; black aesthetic
• Ports: fittings-ready terminals for liquid cooling integration
• Origin: manufactured in Slovenia

How to use

Before installation, prepare your custom loop and ensure coolant is compatible with copper and acetal components. Remove the graphics card’s original cooler according to manufacturer instructions and clean the GPU die, VRAM and surrounding surfaces from old thermal compound. Align the water block so the cold plate contacts GPU, VRAM and VRM pads; secure the block using the supplied brass standoffs and mounting mechanism. Connect inlet and outlet fittings, fill and bleed the loop, then perform a leak test with the pump running externally or at low speed. Monitor temperatures and verify proper flow and sealing before returning the system to normal operation.

Recommendations

Use coolant formulations recommended for mixed-metal loops and avoid aggressive additives. Pair the block with a compatible retention backplate for improved passive cooling on VRAM and PCB VRM areas. When using weaker pumps, the Vector’s low hydraulic restriction design permits adequate flow, but always confirm flow rates and perform regular maintenance checks for leaks and coolant condition.