BitsPower NEBULA Astral RTX 5090 radiator ARGB acrylic, black

BitsPower NEBULA Astral RTX 5090 radiator ARGB acrylic, black is a GPU cooling block engineered for use with GeForce RTX 5090 series graphics cards in custom water-cooling loops. The unit features an acrylic top with integrated ARGB lighting and a black finish that combines functional heat transfer surfaces with visual customization. It is designed to mount directly on compatible RTX 5090 GPU PCBs to provide targeted thermal management and integrate into looped liquid-cooling systems.

Advantages

The acrylic construction allows for visible coolant flow and ARGB elements for system lighting synchronization, while the black finish provides a discreet, uniform appearance inside the chassis. The block is shaped to align with the GPU die and VRAM power areas for efficient heat extraction. It supports connection to standard liquid-cooling fittings and is intended to work as part of a closed-loop custom cooling configuration, helping maintain stable GPU temperatures under sustained load.

Suitable for

• Custom PC water-cooling loops using GeForce RTX 5090 graphics cards
• Enthusiast builds requiring ARGB lighting integration and visible coolant paths
• Overclocking or sustained high-load GPU workloads where enhanced thermal management is needed

Key specifications

• Compatibility: designed for GeForce RTX 5090 series GPUs
• Material: acrylic top with internal cooling surfaces (metal cold plate not specified here)
• Finish: black exterior appearance
• Lighting: integrated ARGB illumination compatible with addressable RGB control
• Mounting: direct GPU block mounting for full-cover cooling of GPU and surrounding components
• Connections: standard liquid-cooling fittings supported (thread type varies by system)

How to use

Install the radiator block by first preparing the GPU according to the card manufacturer's guidance for water-block installation, including removing the original cooler and cleaning contact surfaces. Position the block to align mounting points and coolant channels, secure it with the supplied hardware, and connect inlet and outlet fittings to your loop tubing. Connect the ARGB header to a compatible controller or motherboard ARGB connector for lighting control. After installation, perform a leak test and cycle the pump to ensure proper flow before powering the entire system.

Recommendations

Use compatible thermal pads or paste as specified for your graphics card model to ensure proper heat transfer. Verify mechanical compatibility with your specific RTX 5090 PCB revision and check clearance in the case for the block and tubing. Maintain the loop with appropriate coolant and schedule periodic inspections for leaks or blockages to preserve cooling performance and ARGB functionality.