Alphacool
Alphacool Core Geforce RTX 4090 Master with Backplate
Best custom cooling solution for high-performance graphics card enthusiasts.
Elevate your PC's cooling with the Alphacool Core Geforce RTX 4090 Master water block. Designed for exceptional performance and a sleek aesthetic, this block features a single-piece copper construction with durable chrome plating. The integrated aluminum backplate adds structural integrity and visual appeal. Experience vibrant illumination with 13 digitally addressable RGB LEDs. Its redesigned jet plate and optimized fin structure ensure superior heat dissipation and water flow, while high-conductivity thermal pads guarantee perfect contact for peak performance. This water block is a premium component for custom liquid cooling loops.
$199.99
Owner Satisfaction
4.6
/ 5
Category Rank
632
/ 3605
#632 in Computer System Cooling Parts
Price vs Category Average
+32%
Above average
Material (Cooler)
Chrome-plated copper
/ Chrome-plated copper
Who it's for
- Overclockers seeking maximum performance and thermal stability
- PC builders prioritizing aesthetic appeal in custom loops
- Silent PC enthusiasts wanting a near-silent gaming experience
Who should skip it
- Budget-conscious builders avoiding complex custom cooling setups
- Users uncomfortable with voiding warranties or manual hardware assembly
- Owners of non-compatible PCB layouts or those avoiding maintenance
Performance breakdown
Thermal Dissipation
Redesigned jet plate and copper construction maximize heat transfer efficiency.
Build Quality
Single-piece copper and chrome plating offer premium durability and aesthetics.
Flow Optimization
Refined internal fin structure ensures minimal resistance for high-performance loops.
Aesthetic Integration
Addressable RGB lighting provides vibrant, customizable style for modern builds.
Structural Support
Included aluminum backplate prevents GPU sag while enhancing thermal contact.
Installation Compatibility
Precision engineering requires specific PCB versions for a perfect fit.
Key Specs
Material (Cooler)
Chrome-plated copper
Material (Backplate)
Aluminum
Cooler Dimensions
235.80 x 152.96 x 31.90mm
Backplate Dimensions
235.80 x 129.96 x 5mm
Cooler Bottom Thickness
11.3mm
Fin Spacing/Thickness
0.4mm
Lighting
13 digital aRGB LEDs
Power Connector (LEDs)
5V 3-Pin JST
Features
- Single-piece copper construction for maximum contact
- Durable chrome plating for lasting finish
- Aluminum backplate for support and style
- Vibrant digital RGB lighting
- Optimized water flow for superior cooling
- High-conductivity thermal pads included
- Integrated G1/4 threads for flexible setup
- Enhanced fin structure for efficient heat transfer
What customers say
This premium water block delivers dramatic thermal improvements for the RTX 4090, with users reporting significant temperature drops under load. The integrated backplate is highly valued for both structural support and effective passive cooling of rear components. Aesthetics are a major draw; the clean design and quality materials integrate beautifully into high-end custom loops. While installation demands precision typical of custom cooling, the resulting performance gains, reduced noise, and superior look make the effort worthwhile. Customers view this expensive component as a necessary investment for maximizing overclocking potential, confirming Alphacool's strong position in the high-end market.
Know before you buy
No, this block is specifically engineered for certain Gigabyte RTX 4090 models featuring the V.1.1 PCB layout. Always verify your specific card's PCB version against the manufacturer's compatibility list before purchasing.
The main cooling block is crafted from a single piece of copper with a durable chrome-plated finish to prevent corrosion. The included backplate is made from aluminum, which provides both structural support and improved thermal dissipation.
Yes, high-conductivity thermal pads are included in the package. These are pre-cut to ensure optimal contact between the block and your card's critical components for efficient heat transfer.
The block features 13 digitally addressable RGB LEDs that connect via a standard 5V 3-pin JST connector. You can plug this directly into a compatible 5V aRGB header on your motherboard or a dedicated lighting controller.
The block uses standard G1/4 threads, which are the industry standard for custom liquid cooling. This ensures broad compatibility with most aftermarket compression and barb fittings.
The block utilizes a redesigned jet plate and an optimized fin structure with 0.4mm spacing. This configuration increases the surface area for heat transfer and promotes more efficient water flow across the GPU core and memory modules.
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$200