Alphacool
Alphacool Core Geforce RTX 4090 Reference Design with Backplate
Best water cooling solution for compact server-grade graphics card builds.
Experience superior cooling with the Alphacool ES GPX Copper/Carbon water cooler, designed for the NVIDIA GeForce RTX 4090 Reference Design and the Alphacool Enterprise Series. This advanced water block and backplate combination optimizes water flow for maximum thermal performance. Its rear-facing ports simplify tubing runs in compact server environments. Crafted with a chrome-plated copper base and a sleek carbon top, it offers exceptional durability and a refined aesthetic. High-conductivity thermal paste and soft thermal pads ensure optimal contact for enhanced cooling across all critical components.
$124.99
Owner Satisfaction
4.5
/ 5
Category Rank
866
/ 3605
#866 in Computer System Cooling Parts
Price vs Category Average
-17%
Below average
Cooler Dimensions
20912024
/ x x mm
Who it's for
- Overclockers seeking maximum GPU performance and thermal stability
- PC builders prioritizing premium aesthetics and durable materials
- Users needing to reclaim space in compact PC cases
Who should skip it
- Novice builders intimidated by complex GPU disassembly
- Budget-conscious shoppers avoiding additional high-cost components
- Users preferring low-maintenance cooling solutions over custom loops
Performance breakdown
Thermal Dissipation Efficiency
Chrome-plated copper base ensures rapid heat transfer from the GPU core.
Server Integration
Rear-facing ports streamline complex tubing runs in tight rack environments.
Build Durability
Robust materials provide long-term reliability under constant high-pressure operation.
Aesthetic Refinement
Carbon top offers a sleek, professional look for high-end workstations.
Installation Complexity
Requires careful handling but includes everything needed for a secure fit.
Flow Optimization
Internal architecture minimizes resistance for consistent, high-volume coolant circulation.
Key Specs
Cooler Dimensions
209 x 120 x 24mm
Backplate Dimensions
199 x 120 x 6mm
Cooler Material
Chrome-plated copper
Cooler Top Material
Carbon
Backplate Material
Aluminum
Threads
2 x G1/4
Maximum Working Temperature
60 °C
Pressure Tested
0.8 Bar
Features
- Optimized water flow for maximum cooling.
- Chrome-plated copper for durability.
- Rear-facing ports simplify tubing.
- Lightweight carbon top for aesthetics.
- Includes high-conductivity thermal paste.
- Designed for RTX 4090 Reference Design.
- Space-saving server rack installation.
What customers say
Enthusiasts overwhelmingly praise the Alphacool Core RTX 4090 water block for its exceptional thermal performance. Users report significant temperature reductions under load, enabling the powerful GPU to maintain higher, stable boost clocks while drastically lowering system noise. The build quality is highly regarded, featuring robust construction and an effective backplate for comprehensive component cooling. Aesthetically, the clean, minimalist design integrates well into custom loops. While installation demands precision typical of full cover blocks, experienced builders find the process straightforward. Despite its premium price, the consensus is that this block is a worthwhile investment for those prioritizing maximum cooling efficiency and superior stability in high-end liquid cooling systems.
Know before you buy
No, this model is specifically engineered for the NVIDIA GeForce RTX 4090 Reference Design. It will not fit custom PCB layouts from manufacturers like ASUS, MSI, or Gigabyte that deviate from the reference design.
The rear-facing ports are designed to simplify tubing runs within compact server chassis or workstation racks. This configuration helps reduce cable and tube clutter in tight spaces where traditional top-mounted ports might be obstructed.
The base is made from chrome-plated copper to ensure efficient heat transfer and long-term durability. The top is crafted from carbon for a lightweight, sleek aesthetic, while the included backplate is made from aluminum.
Yes, the package includes the water block, the backplate, and the necessary high-conductivity thermal paste and soft thermal pads. You will still need to provide your own fittings and tubing to complete the loop.
This cooler is rated for a maximum working temperature of 60 °C. It has been pressure tested to 0.8 bar to ensure structural integrity under standard operating conditions.
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$125