Liquid CPU/GPU Water Block Alphacool Core GTX 5090 with Backplate – Alphacool 14739

The Alphacool Core GTX 5090 with backplate is a liquid cooling block engineered for direct-contact cooling of compatible GPU and selected CPU layouts. Designed for integration into custom water-cooling loops, the block provides a solid contact surface and a fitted backplate that supports mounting stability and contributes to passive heat distribution across the PCB. The design aims to reduce operating temperatures and mitigate thermal throttling during sustained high-load tasks such as gaming, rendering or compute workloads.

Advantages

This water block offers full-cover contact where compatible, enabling efficient heat transfer from the GPU package to the coolant. The included backplate improves mechanical support and helps spread heat away from critical areas on the rear of the graphics card. The construction uses materials and machining intended for corrosion resistance and reliable sealing in looped liquid systems. Its layout and port positioning are arranged for straightforward integration into a custom loop.

Suitable for

• Custom PC water-cooling loops for high-performance graphics cards
• Systems requiring reduced GPU temperatures for sustained workloads
• Enthusiast builds where noise reduction and thermal control are priorities
• Overclocked configurations that need improved heat dissipation

Key specifications

• Full-cover water block for compatible GPU/selected CPU contact surfaces
• Fitted backplate for improved mounting stability and rear-side heat spread
• Multiple G1/4" threaded coolant ports for loop integration
• Machined cold plate for direct heat transfer from the die area
• Sealing system compatible with standard liquid cooling media
• Material selection oriented to corrosion resistance and loop longevity

How to use

Confirm compatibility with the target graphics card or CPU layout before installation. Drain and depressurize the loop, then remove the graphics card cooling shroud according to the card manufacturer’s instructions. Align the water block to the PCB and mounting points, place thermal interface material on GPU and memory where required, and install the fitted backplate to secure the assembly. Connect the block to the loop using appropriate G1/4" fittings and hoses, refill the loop with recommended coolant, and perform leak testing at low pump speed prior to powering the full system.

Usage recommendations

Use compatible non-conductive, manufacturer-recommended coolant and follow standard leak-testing procedures. Maintain regular loop maintenance, including periodic coolant replacement and inspection of seals and fittings to ensure long-term performance and to avoid corrosion or blockage.