6 Best Alternatives to the Alphacool RTX 3090 Acrylic Backplate (2026)
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The Alphacool RTX 3090 Acrylic Backplate actively cools the rear of Founders Edition cards using nickel-plated copper and your existing loop. You might seek alphacool rtx 3090 acrylic backplate alternatives if you need different dimensions, a different material, or support for other GPU models. Some users prefer pure copper radiators for maximum thermal density, while others need CPU blocks for their specific AMD sockets. This guide covers options that share key specifications with the original, ensuring you find a compatible upgrade for your custom water cooling loop. We selected these products because their specs overlap with the original, including similar materials like acrylic or copper and active cooling capabilities. Whether you require a pump top for better visibility or a dedicated backplate for an RTX 3080, the following list provides practical choices based on published data. Each item meets the core requirement of integrating into a standard G1/4" or hose-based loop. You can compare dimensions, weight, and connection types to find the best fit for your case and cooling strategy. The goal is to help you identify components that deliver reliable thermal performance without unnecessary features.
How the Alternatives Compare
Alphacool Eisdecke D5 Plexi Pump Top
The Alphacool Eisdecke D5 Plexi Pump Top serves a different role than the GPU backplate. It replaces the reservoir lid for D5 pumps rather than cooling a graphics card. You get clear acrylic visibility for coolant flow instead of nickel-plated copper heat dissipation. The dimensions are much smaller at 3.15 by 3.15 inches. It weighs only 0.44 kilograms. This component is for builders who need to upgrade their pump station visibility. It does not connect to your GPU loop for thermal management. Choose this if your pump top is worn or you want better fluid aesthetics. It lacks the active cooling capacity of the backplate entirely.
Alphacool Eisblock Aurora GPX-N Acrylic Active Backplate
The Alphacool Eisblock Aurora GPX-N Acrylic Active Backplate is the direct sibling to the original. It shares the same acrylic material and ARGB lighting. It targets the same RTX 3080 and 3090 Founders Edition cards. The weight remains 2.5 pounds. This model uses a different part number, 13063. It offers identical active cooling performance through the rear nickel-plated copper plate. You should pick this if the original is out of stock or if you prefer the specific Aurora aesthetic. It provides the same thermal benefits and loop integration options. There is no functional difference in cooling capability between these two compatible backplates.
Alphacool NexXxoS XT45 50mm Full Copper Radiator
The NexXxoS XT45 50mm Full Copper Radiator focuses on heat rejection rather than component contact. It is made entirely of copper, unlike the acrylic and copper mix of the backplate. The size is compact at 50mm thick. It measures 3.94 by 2.36 inches. It weighs 0.36 kilograms. This radiator is for loop segments where space is tight. It does not attach to your GPU. You use it to dissipate heat from the coolant loop. Choose this if you need extra cooling capacity in a small chassis. It requires fans to function. It is a heat exchanger, not a direct component cooler like the backplate.
Watercool HEATKILLER IV Basic AM4 CPU Block
The Watercool HEATKILLER IV Basic CPU Block cools processors, not graphics cards. It fits AMD AM4 sockets. The material is acrylic with a copper base. It measures 5.51 by 4.33 inches. It weighs 0.31 kilograms. This block is for your CPU cold plate. It offers improved flow and surface area for processor cooling. It does not interact with your GPU loop. You need this if you are building a full system loop and need CPU coverage. It lacks the ARGB lighting of the Alphacool backplate. It is a functional component for thermal management of the main processor.
Watercool HEATKILLER IV PRO Acrylic AMD Water Block
The Watercool HEATKILLER IV PRO Acrylic Block supports both AM4 and AM5 sockets. It features a copper color finish. The dimensions match the basic model at 5.51 by 4.33 inches. It weighs 10.9 ounces. This block is designed for high-flow performance on AMD platforms. It prioritizes thermal efficiency over lighting features. It does not cool your GPU. You should choose this for modern AMD motherboards. It integrates into your custom loop to cool the CPU. It lacks the acrylic backplate’s rear GPU cooling capability. It is a specialized component for processor thermal management in custom water cooling builds.
Alphacool Aurora Acryl X4 RAM Water Block
The Alphacool Aurora Acryl X4 RAM Water Block cools memory modules. It is made of acrylic and black hardware. It measures 6.3 by 2.76 inches. It weighs 5.28 ounces. This block is for compatible Alphacool RAM modules. It integrates with the Aurora lighting ecosystem. It provides thermal management for your system memory. It does not attach to your graphics card. You need this if you are cooling RAM in your loop. It lacks the GPU backplate’s copper contact plate for heat dissipation. It is a specialized component for memory cooling. It complements the backplate in a full system loop.
Quick picks
Our 7 picks
Alphacool RTX 3090 Acrylic Backplate
Best for: RTX 3090 Founders Edition active cooling
- Lighting
- ARGB
- Material
- Nickel-plated copper, acrylic
- Thread Size
- G1/4"
- Dimensions
- 8.11 × 4.72 × 0.51 inches
- Weight
- 2.5 pounds
View on Amazon: Alphacool RTX 3090 Acrylic Backplate Affiliate link
This active backplate cools the rear of your RTX 3090 Founders Edition card. It uses nickel-plated copper for heat transfer and acrylic for structure. You can connect it via G1/4" threads or 5/3mm hose ports. The unit weighs 2.5 pounds and measures 8.11 by 4.72 inches. It adds ARGB lighting to your build. This upgrade helps lower GPU temperatures by actively cooling the back.
Pros
- Nickel-plated copper construction for efficient heat dissipation
- Dual connection options with G1/4" threads and 5/3mm hose ports
- Active cooling design significantly improves thermal performance
- ARGB lighting integration for aesthetic customization
Cons
- Requires existing loop infrastructure for integration
- Pump not included in the package
- Specific compatibility limited to Founders Edition cards
Good fit if
- You want to actively cool the back of your RTX 3090
- You already have a custom loop with G1/4" fittings
- You prefer acrylic aesthetics with ARGB lighting
Skip if
- You use a non-Founders Edition RTX 3090
- You need a passive cooling solution
- You want a complete kit with pump included
Verdict: Alphacool RTX 3090 Acrylic Backplate is a solid upgrade for Founders Edition owners with existing loops. It effectively lowers temperatures through active cooling. You should choose it if you need precise thermal management for your GPU.
Alphacool Eisdecke D5 Plexi Pump Top
Best for: D5 pump users needing clear acrylic visibility
- Material
- Plexi (acrylic)
- Thread Size
- G1/4
- Radiator Size
- 40mm
- Pump Compatibility
- D5
- Coolant Color
- Clear
- Dimensions
- 3.15 × 3.15 × 1.57 inches
View on Amazon: Alphacool Eisdecke D5 Plexi Pump Top Affiliate link
This is an acrylic pump top designed for the D5 pump. It includes three stands for mounting and five G1/4 ports for tubing. The unit weighs 0.44 kilograms and measures 83 by 80 by 87 millimeters with stands. You need to buy the pump separately. It suits builders who want clear visibility of coolant flow and a compact footprint for their reservoir setup.
Pros
- Five G1/4 ports for tubing connections
- Clear acrylic material for coolant visibility
- Includes three G1/4 plugs for unused ports
- Compact dimensions with integrated stands
Cons
- Pump is not included in the package
- Limited to compatibility with D5 pumps only
- No integrated reservoir, requiring a separate tank
Good fit if
- You are building a custom loop with a D5 pump
- You prefer clear acrylic for visual coolant monitoring
- You need multiple G1/4 ports for tubing routing
Skip if
- You need a pump included with the top
- You plan to use a DDC pump instead
- You want a single unit with an integrated reservoir
Verdict: Alphacool D5 Pump Top V.3 Acrylic fits builders using a D5 pump who want clear visibility and multiple connection points. It is a practical component for custom loops where the pump and reservoir are separate.
Alphacool Eisblock Aurora GPX-N Acrylic Active Backplate
Best for: RTX 3080/3090 Founders Edition active back cooling
- Lighting
- 6 digital aRGB LEDs, 5V
- Material
- Nickel-plated copper, acrylic
- Thread Size
- G1/4
- Weight
- 2.5 pounds
View on Amazon: Alphacool Eisblock Aurora GPX-N Acrylic Active Backplate Affiliate link
This Alphacool Eisblock Aurora backplate actively cools the rear of RTX 3080 and 3090 Founders Edition cards. Constructed from nickel-plated copper and acrylic, it connects to your loop via G1/4" threads or 5/3mm hose ports. The ARGB finish adds visual appeal. It weighs 2.5 pounds. This accessory suits builders seeking to maximize GPU thermal performance through direct liquid contact on the backplate.
Pros
- Active cooling via nickel-plated copper base
- Dual connection options: G1/4" threads or 5/3mm hoses
- ARGB acrylic finish
- Compatible with RTX 3080/3090 Founders Edition
Cons
- Heavier build at 2.5 pounds
- Requires existing loop integration
- No included pump or fittings
Good fit if
- You want to cool the back of your GPU
- You already have a custom loop setup
- You prefer ARGB aesthetics
Skip if
- You use a non-Founders Edition card
- You need a passive only solution
- You want a complete kit with pump
Verdict: Alphacool RTX 3090 Ti Acrylic Active Backplate delivers targeted thermal reduction for compatible Founders Edition cards. It fits users who already have a loop and want to utilize the GPU's rear surface for heat dissipation.
Alphacool NexXxoS XT45 50mm Full Copper Radiator
Best for: Compact pure copper cooling needs
- Radiator Size
- 50mm
- Material
- Copper
- Thread Size
- G1/4
- Dimensions
- 3.94 × 2.36 × 1.97 inches
- Weight
- 0.36 kilograms
View on Amazon: Alphacool NexXxoS XT45 50mm Full Copper Radiator Affiliate link
This is a 50mm thick radiator built entirely from pure copper. The pre-chambers, water channels, and fins use this material for high thermal conductivity. It measures 3.94 inches long, 2.36 inches wide, and weighs 0.36 kilograms. You get superior heat dissipation compared to aluminum options. This unit suits users who need compact cooling with maximum material efficiency.
Pros
- Pure copper construction for all water-bearing components
- 50mm thickness for high thermal performance
- Compact 3.94-inch length fits tight spaces
- Lightweight at 0.36 kilograms
Cons
- Very limited 50mm thickness restricts fan compatibility
- No mention of included mounting hardware
- No mention of included fans or pumps
Good fit if
- You need a compact radiator for small cases
- You prioritize pure copper thermal conductivity
- You are building a custom loop with specific spacing
Skip if
- You require standard 120mm or 140mm fan support
- You want a complete kit with fans included
- You need a thicker radiator for high airflow
Verdict: Alphacool NexXxoS XT45 50mm Copper Radiator delivers dense copper cooling in a small footprint. It fits builders who need maximum thermal density in tight cases without standard fan sizes.
Watercool HEATKILLER IV Basic AM4 CPU Block
Best for: AMD AM4 custom loop builders
- Socket Compatibility
- AMD AM4, AM5
- Material
- Acrylic, Copper
- Thread Size
- G1/4
- Dimensions
- 5.51 × 4.33 × 1.97 inches
- Weight
- 0.31 kilograms
View on Amazon: Watercool HEATKILLER IV Basic AM4 CPU Block Affiliate link
This Watercool HEATKILLER IV Basic block is designed for AMD AM4 sockets. It features an acrylic top for a clean look. The internal structure includes finer micro fins to increase surface area. It offers up to 3°C temperature decrease compared to its predecessor. The real high flow design uses bigger jet structures. It is suitable for users building custom loops on AM4 platforms.
Pros
- Compatible with AMD AM4 sockets
- Acrylic material for a clean appearance
- Finer micro fins enlarge cooling surface
- Real high flow design with bigger jets
Cons
- Limited to AM4 socket compatibility
- Basic model lacks premium aesthetic details
- No mention of included mounting hardware
Good fit if
- You are building a custom loop for an AMD AM4 CPU
- You prefer a clean acrylic top for your build
- You want improved flow performance from your block
Skip if
- You use an Intel CPU or different AMD socket
- You need a block for a newer socket like AM5
- You want a pump top or integrated pump
Verdict: Watercool HEATKILLER IV Basic CPU Block is a practical choice for AM4 builders seeking improved flow and surface area. It fits users who prioritize functional cooling specs over complex aesthetics.
Watercool HEATKILLER IV PRO Acrylic AMD Water Block
Best for: AMD AM5 custom loop builders
- Material
- Copper
- Socket Compatibility
- AM4, AM5
- Dimensions
- 5.51 × 4.33 × 1.97 inches
- Weight
- 10.9 ounces
View on Amazon: Watercool HEATKILLER IV PRO Acrylic AMD Water Block Affiliate link
The Watercool HEATKILLER IV PRO is an acrylic CPU water block for AMD AM4 and AM5 sockets. It features a copper base and a real high-flow design with integrated jets. The block measures 5.51 by 4.33 by 1.97 inches and weighs 10.9 ounces. It supports 16/10 and 19/13 fittings. This unit suits builders seeking broad socket compatibility and improved flow performance for their custom loop.
Pros
- Supports AMD AM4 and AM5 sockets
- Real high-flow design with integrated jets
- Compatible with 16/10 and 19/13 fittings
Cons
- Acrylic top may not match all aesthetic themes
- No included mounting hardware for AM5 listed
- Lacks RGB lighting or pump integration
Good fit if
- You need a block for AM5 processors
- You prefer high-flow performance in your loop
- You use 16/10 or 19/13 tubing fittings
Skip if
- You require native RGB lighting effects
- You only have an Intel CPU socket
- You want a pre-assembled pump top unit
Verdict: Watercool HEATKILLER IV PRO Acrylic Block delivers reliable cooling for AMD platforms with its high-flow design. It fits users who prioritize flow performance and broad socket support over aesthetic extras like lighting.
Alphacool Aurora Acryl X4 RAM Water Block
Best for: Custom loop builders using Alphacool RAM modules
- Lighting
- Digital RGB, 3-Pin 5V
- Material
- Nickel-plated copper, acrylic
- Thread Size
- G1/4
- Dimensions
- 6.3 × 2.76 × 1.57 inches
- Weight
- 5.28 ounces
View on Amazon: Alphacool Aurora Acryl X4 RAM Water Block Affiliate link
This Alphacool water block cools four DIMM slots using a 4 mm thick nickel-plated copper base. The acrylic top houses a flush-mounted digital RGB LED strip for lighting. It measures 6.3 x 2.76 x 1.57 inches and weighs 5.28 ounces. You need compatible Alphacool D-RAM modules for proper installation. It suits builders who want dedicated RAM cooling with synchronized Aurora lighting.
Pros
- Massive 4 mm thick copper base for heat dissipation
- Nickel-plated finish for corrosion resistance
- Embedded digital RGB LED strip with flush design
- Compact 6.3 x 2.76 x 1.57 inch footprint
Cons
- Requires specific Alphacool D-RAM modules for installation
- No software control or app integration mentioned
- Lighting is limited to digital RGB only
Good fit if
- You are building a full custom loop with Alphacool components
- You want dedicated cooling for high-performance RAM
- You prefer visible acrylic tops with integrated lighting
Skip if
- You use non-Alphacool RAM modules
- You need software-controlled RGB synchronization
- You are using a pre-built system with limited clearance
Verdict: Alphacool Aurora Acryl X4 D-RAM Block is a specialized cooling solution for users with compatible Alphacool memory modules. It delivers robust thermal performance through its thick copper base and integrates seamlessly with Aurora lighting ecosystems.
Specifications side by side
| Spec | Alphacool RTX 3090 Acrylic Backplate | Alphacool Eisdecke D5 Plexi Pump Top | Alphacool Eisblock Aurora GPX-N Acrylic Active Backplate | Alphacool NexXxoS XT45 50mm Full Copper Radiator | Watercool HEATKILLER IV Basic AM4 CPU Block | Watercool HEATKILLER IV PRO Acrylic AMD Water Block | Alphacool Aurora Acryl X4 RAM Water Block |
|---|---|---|---|---|---|---|---|
| Radiator Size | not stated | not stated | not stated | 50mm | not stated | not stated | not stated |
| Socket Compatibility | not stated | not stated | not stated | not stated | AMD AM4, AM5 | not stated | not stated |
| Lighting | ARGB | not stated | 6 digital aRGB LEDs, 5V | not stated | not stated | not stated | Digital RGB, 3-Pin 5V |
| Material | Nickel-plated copper, acrylic | Plexi (acrylic) | Nickel-plated copper, acrylic | Copper | Acrylic, Copper | Copper | Nickel-plated copper, acrylic |
| Thread Size | G1/4" | G1/4 | G1/4 | G1/4 | G1/4 | not stated | G1/4 |
| Pump Compatibility | not stated | D5 | not stated | not stated | not stated | not stated | not stated |
| Coolant Color | not stated | Clear | not stated | not stated | not stated | not stated | not stated |
| Dimensions | 8.11 × 4.72 × 0.51 inches | 3.15 × 3.15 × 1.57 inches | not stated | 3.94 × 2.36 × 1.97 inches | 5.51 × 4.33 × 1.97 inches | 5.51 × 4.33 × 1.97 inches | 6.3 × 2.76 × 1.57 inches |
| Weight | 2.5 pounds | 0.44 kilograms | 2.5 pounds | 0.36 kilograms | 0.31 kilograms | 10.9 ounces | 5.28 ounces |
| Color | ARGB | Clear | ARGB | Black | Clear | Copper | Black |
| Model | 13039 | 13189 | 13063 | 14219 | 18016-2 | 18019 | 17467 |
| Size | not stated | not stated | not stated | 50mm | not stated | not stated | not stated |
Frequently asked questions
Can I use these alternatives for non-Founders Edition RTX 3090 cards?
The listed Alphacool backplates are designed specifically for Founders Edition models. You must verify compatibility with your specific card manufacturer. Other options in this list, such as the Watercool HEATKILLER IV PRO, support AMD AM5 sockets. These are CPU blocks, not GPU backplates. You cannot use them as direct replacements for a graphics card backplate. Check the product specifications for exact socket or board support before purchasing.
Do these acrylic components require ARGB controllers?
Several items in this list feature ARGB lighting. The Alphacool RTX 3090 Acrylic Backplate and the Eisblock Aurora GPX-N include ARGB connections. You need an ARGB controller or motherboard header to activate these lights. The Watercool HEATKILLER IV PRO uses a copper base without specified lighting. It relies on thermal performance rather than illumination. Always check the specific model attributes to determine if you need additional lighting hardware for your build.
Is the Alphacool D5 pump top a valid GPU cooling alternative?
No, it serves a completely different function. The Alphacool Eisdecke D5 Plexi Pump Top replaces the reservoir lid for D5 pumps. It does not attach to a graphics card. You use it to view coolant flow in your reservoir. It is not a backplate for an RTX 3090. You need a dedicated GPU backplate for active cooling of the rear of the card. This item is for pump and reservoir management only.
What is the weight difference between the acrylic backplates and copper radiators?
The Alphacool RTX 3090 Acrylic Backplate weighs 2.5 pounds. The NexXxoS XT45 50mm Full Copper Radiator is much lighter at 0.36 kilograms. The Eisblock Aurora GPX-N also weighs 2.5 pounds. Copper radiators are dense but compact. Acrylic backplates are heavier due to their size and material. You must account for these weights when mounting components in your case. Heavier items may require additional support brackets for stability.
Which block supports the newest AMD processors?
The Watercool HEATKILLER IV PRO Acrylic AMD Water Block supports both AM4 and AM5 sockets. It is designed for newer AMD platforms. The basic HEATKILLER IV Basic version supports only AM4. You should choose the PRO version for AM5 compatibility. Both blocks use acrylic tops with copper bases. They fit custom loops where you need broad socket support. Verify your motherboard socket type before selecting the correct block for your CPU.
How does the size of the copper radiator compare to the backplates?
The NexXxoS XT45 50mm Radiator measures 3.94 inches in length. The Alphacool RTX 3090 Backplate is 8.11 inches long. The radiator is significantly smaller and designed for tight spaces. It offers high thermal density in a compact footprint. The backplates are larger to cover the entire rear of the GPU. You choose the radiator for space-constrained builds and the backplate for full GPU coverage. Dimensions vary widely between these component types.
Can I mix Alphacool and Watercool blocks in one loop?
Yes, you can mix brands in a single custom loop. The components use standard fittings and tubing connections. The Alphacool Aurora RAM block and Watercool CPU blocks both fit standard loop layouts. Ensure all fittings match your tubing size. The materials, such as acrylic and copper, are compatible with standard coolants. You just need to verify flow rates and pressure drops. Mixing brands allows you to select the best part for each specific component in your system.