GPU cooler Alphacool ES RTX 4000 Ada Gen 1-Slot — full-cover liquid cooling block for RTX 4000 Ada series

The Alphacool ES RTX 4000 Ada Gen 1-Slot is a single-slot full-cover liquid cooling block engineered for NVIDIA RTX 4000 Ada series graphics cards. Designed to replace the original air cooler, this water block directs coolant over the GPU die, memory modules and voltage regulation components to improve heat transfer and reduce acoustic output. It is intended for integration into custom liquid-cooling loops in desktop workstations and professional systems where lower temperatures and stable operation under sustained load are required.

Advantages

This full-cover block provides direct liquid contact to critical components, which increases cooling efficiency compared with standard air cooling and helps maintain lower GPU and memory temperatures during intensive rendering or compute tasks. The single-slot profile conserves expansion space in compact cases and allows denser system configurations. The Alphacool design is compatible with common G1/4" fittings and standard coolant compositions, enabling easy integration into existing custom loops while contributing to quieter system operation by reducing fan speeds.

Suitable for

• Workstations running professional rendering, CAD or simulation workloads
• High-density builds and compact chassis where expansion slots are limited
• Custom liquid-cooling loops for improved thermal stability and reduced noise
• Systems used for GPU compute, AI development, and long-duration workloads

Key specifications

• Form factor: single-slot full-cover liquid cooling block
• Compatibility: NVIDIA RTX 4000 Ada series graphics cards
• Cooling target: GPU die, VRAM modules and VRM components
• Fitting standard: G1/4" threaded ports compatible with common fittings
• Material: precision-machined metal cold plate with transparent top for coolant flow visibility
• Intended use: custom loop liquid cooling for desktop workstation systems

How to use

Before installation, power down the system and disconnect all power sources. Remove the factory air cooler and clean the GPU die and contact surfaces with isopropyl alcohol to ensure proper thermal interface contact. Apply an appropriate thermal compound to the GPU die and install the Alphacool full-cover block according to the supplied mounting hardware and the card-specific bracket alignment. Connect tubing using G1/4" fittings and ensure secure, leak-free connections. Fill and bleed the custom loop, then run the system at low RPM to check for leaks and confirm coolant flow before returning to full operation.

Usage recommendations

Use high-quality, corrosion-inhibiting coolant and follow Alphacool’s maintenance guidelines for periodic loop flushing and inspection. Verify compatibility with your specific RTX 4000 Ada PCB revision and ensure adequate case airflow for supporting components. When assembling the loop, balance flow and consider adding a temperature monitor in the loop to track coolant temperature during heavy workloads.