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Rectangular nickel-chromium copper block with clear acrylic top, RGB strip, magnetic faceplate

Bitspower

Bitspower NEBULA VGA Water Block for ASUS ROG Astral RTX 5090

SKU CH-C93Z-ZBQAW

Full-cover water block with magnetically removable faceplate and back-plate cooling the 12VHPWR 16-pin connector

  • Magnetically removable faceplate enables full customisation
  • Nickel- and chromium-plated copper ensures maximum heat transfer
  • Integrated Digital RGB LED strip adds brilliant illumination
  • Back plate covers 12VHPWR 16-pin connector for rear cooling
  • Multi-port inlet/outlet layout simplifies loop routing

Custom-fit water block for ASUS ROG Astral RTX 5090

This full-cover block is engineered specifically for the ASUS ROG Astral GeForce RTX 5090 graphics card. Nickel- and chromium-plated copper covers the GPU and VRM for direct liquid cooling. A clear acrylic top reveals a built-in Digital RGB LED strip. The magnetic front faceplate detaches for painting, UV printing or 3D-printed inserts.

Verify card model and loop compatibility

Confirm you own the exact ASUS ROG Astral RTX 5090 variant before ordering; the block will not fit other 5090 designs or earlier RTX cards. Ensure your custom loop uses standard G1/4 fittings to match the multi-port inlet and outlet layout. The package includes pre-applied thermal pads and a back plate that contacts the 12VHPWR 16-pin connector area.

Thermal coverage and acoustics

The copper cold plate transfers heat from the GPU core, memory and power delivery into the coolant, so the card runs without its original fans. Pump and radiator noise replace the stock cooler acoustics. The back plate draws heat away from the 12VHPWR 16-pin connector region, helping maintain stable temperatures across the full PCB under load.

Highlights

  • Magnetically removable faceplate enables full customisation
  • Nickel- and chromium-plated copper ensures maximum heat transfer
  • Integrated Digital RGB LED strip adds brilliant illumination
  • Back plate covers 12VHPWR 16-pin connector for rear cooling
  • Multi-port inlet/outlet layout simplifies loop routing

Specifications

No published specifications for this item yet.

Questions about this item

Does the water block come with a back plate or do I need to buy one separately?

A back plate is included and covers the 12VHPWR 16-pin power connector for rear-side cooling.

Is this NEBULA block compatible with any RTX 5090 or only the ASUS ROG Astral model?

It is engineered specifically for the ASUS ROG Astral GeForce RTX 5090 and will not fit other 5090 variants.

How does the magnetically attached faceplate affect the block once it is installed in a loop?

The removable front faceplate allows painting, UV printing or 3D-printed designs without disassembling the water block from the card.

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