Thermal Grizzly DeltaMate ROG Astral RTX 5090, GPU Water Block, Black

The Thermal Grizzly DeltaMate GPU Block for the ROG Astral RTX 5090 is a water block designed for custom liquid-cooling loops. It is constructed from nickel-plated copper, black-anodized aluminum, and transparent acrylic. A dual-cold-plate layout transfers heat from the GPU die, VRAM, and VRM. The core features a 0.2 mm microfin structure to increase the heat-transfer surface area. This design replaces the factory cooler, allowing the card to be integrated into a custom loop.

This block is compatible exclusively with the ASUS ROG Astral GeForce RTX 5090 series, including LC editions. Measuring 282 × 135 × 28 mm, it offers a more compact alternative to standard air coolers. The included “The Oracle” spacer PCB helps verify fitment and tubing runs during installation. The block supports both pass-through and direct terminal mounting to suit different routing configurations. Thermal grease is provided for mounting.

• Weight: 1100 g
• 27 integrated addressable RGB LEDs
• Standard G1/4" ports
• Terminal block compatible with brass fittings
• 3-pin ARGB header (+5V/DATA/GND) for lighting control