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Clear acrylic water block with magnetic faceplate, copper base, RGB lighting, aluminium backplate, G1/4 ports

Bitspower

Bitspower NEBULA water block RTX 5090 ROG ASTRAL BTF

SKU CH-K786-7NSXA

Full-cover copper water block for the RTX 5090 ROG ASTRAL BTF with a magnetic customisable faceplate, integrated digital RGB lighting and pre-applied thermal pads

  • Magnetic faceplate enables tool-free custom paint or 3D-print designs
  • Nickel-chromium copper cold plate covers GPU die and VRM for maximum heat transfer
  • Clear acrylic top with digital RGB strip syncs to motherboard lighting software
  • Reinforced aluminium backplate adds rigidity and cools rear components passively
  • Pre-applied thermal pads and four G1/4 ports ensure quick, aligned installation

Custom magnetic faceplate

The Bitspower NEBULA water block is engineered specifically for the ASUS ROG Astral BTF GeForce RTX 5090 graphics card. Its magnetically secured front panel detaches easily, allowing enthusiasts to paint, UV print or 3D print a personalised design without permanent modification. This full-cover block targets builders who want both high-end liquid cooling and a unique visual centrepiece for a custom loop.

Full-cover copper cold plate

A precision-machined nickel- and chromium-plated copper base makes direct contact with the GPU die and VRM components to transfer heat rapidly under heavy loads. Pre-applied high-performance thermal pads guarantee correct alignment and immediate thermal performance straight from the box. The reinforced aluminium backplate adds structural rigidity to the BTF PCB while aiding passive dissipation for rear-side components.

Digital RGB lighting and G1/4 porting

A clear acrylic top reveals internal coolant channels illuminated by an integrated Bitspower Digital RGB LED strip compatible with major motherboard sync software. Four threaded G1/4 ports provide flexible inlet and outlet routing options for a clean loop layout. Buyers who need a block for a reference-design RTX 5090 or a different partner model cannot use this product.

How it compares

Measured against everything we stock in GPU Fans & Heatsinks, at today’s prices. Recalculated every night.

Price $432.99
Pricier than about 99% of the 143 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the Bitspower NEBULA water block fit my existing G1/4 inch fittings and tubing?

Yes, the block provides four threaded G1/4" ports so you can reuse any standard G1/4 inch fittings and tubing you already own.

How can I confirm the Digital RGB lighting is functioning correctly after installation?

Connect the LED strip to a 5 V 3-pin addressable RGB header, then use your motherboard sync software to verify the strip lights up and changes colour as expected.

Does the package include the thermal pads and backplate, or must I buy them separately?

High-performance thermal pads are pre-applied to the cold plate and the reinforced aluminum backplate is included, so no extra thermal materials or brackets are required.

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