Alphacool RTX 3090 Acrylic Backplate Review (2026): A Spec-Based Look
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This alphacool rtx 3090 acrylic backplate review covers the Eisblock Aurora GPX-N Active Backplate. It is a nickel-plated copper plate designed for GeForce RTX 3080 and 3090 Founders Edition cards. The unit measures 8.11 inches in length and weighs 2.5 pounds. Its primary function is to allow active water cooling for the rear of the GPU. This integration significantly increases cooling performance by circulating coolant through the backplate. The design includes ARGB lighting and specific connection points for loop integration.
What stands out
- Nickel-plated copper construction for efficient heat transfer
- Active cooling capability for RTX 3080/3090 Founders Edition cards
- G1/4" internal thread inlet and outlet on the top side
- Side-mounted inlet and outlet suitable for 5/3mm hoses
- ARGB lighting integration for visual customization
Who it fits
Good fit for
This backplate suits users building custom loops with Alphacool Eisblock Aurora Acrylic GPX-N GPU blocks. It is ideal for those who want to cool the back of their RTX 3090 card. The dual connection options make it versatile for different tubing styles. If you have G1/4" fittings or 5/3mm hoses, this component fits your setup. It is best for builders seeking maximum thermal performance through active rear cooling.
Who should skip it
You should look elsewhere if you do not own an RTX 3080 or 3090 Founders Edition card. The product is not compatible with other GPU models or non-Founders designs. It also requires an existing water cooling loop. If you lack the necessary fittings or tubing, this part will not work. It is not a standalone cooling solution. Buyers without Alphacool Aurora GPU blocks may find limited compatibility.
Verdict: This backplate effectively extends active cooling to the rear of compatible RTX cards. It is a solid choice for custom loop builders prioritizing thermal performance and specific connection flexibility.
Key specs explained
Material: Acrylic
The backplate uses clear acrylic for its main body. This material allows you to see the ARGB lighting effects inside the unit. Acrylic is lighter than metal and resists corrosion from coolant. It provides a clean look for your build. You should ensure it is compatible with your loop chemistry to prevent clouding over time.
Color: ARGB
This stands for Addressable RGB lighting. You can control each LED individually via software. This lets you create specific patterns or sync with other components. It adds visual flair to the back of your card. Ensure your motherboard or controller supports ARGB headers for full functionality. Standard RGB will not work for individual control.
Length: 8.11 inches
The plate spans most of the card length. This ensures broad coverage for heat dissipation. You must check your case clearance to fit this size. It aligns with standard Founders Edition dimensions. Longer plates generally offer better thermal contact across the GPU area. Verify your chassis supports this footprint before purchasing.
Weight: 2.5 pounds
The unit weighs two and a half pounds. This adds load to your graphics card. You need to ensure your case has adequate support. Heavy backplates can cause sagging over time. Consider using a GPU support bracket to prevent stress on the PCIe slot. The weight comes from the copper and acrylic construction.
Design and build details
The unit combines clear acrylic with nickel-plated copper. The acrylic body lets you see the ARGB lighting effects inside. Copper provides the necessary thermal mass for active cooling. This material choice supports a clean aesthetic while maintaining structural integrity against coolant corrosion. The listing specifies a weight of 2.5 pounds. This mass helps stabilize the graphics card while adding minimal bulk to the build.
Dimensions measure 8.11 inches in length, 4.72 inches in width, and 0.51 inches in height. These proportions ensure compatibility with standard RTX 3080 and 3090 Founders Edition cards. The low profile allows the backplate to sit flush against the PCB without interfering with surrounding components or case clearance. You can mount it directly behind the GPU core area.
Connection options are listed as two distinct variants. The first variant features G1/4 internal threads on the top side for hard tubing or hoses. The second variant offers side-mounted inlets and outlets suitable for 5/3 mm soft tubing. According to the listing, these ports allow easy integration into existing water-cooling loops. You can choose the fitting style that matches your current hardware setup without needing adapters.
Setup and everyday use
Installing this Alphacool backplate requires integrating it into your existing liquid cooling loop. The unit features two distinct connection methods to suit different tubing preferences. You can use the G1/4" internal threaded ports located on the top side. These ports allow you to connect standard fittings and hard tubes directly. This setup provides a rigid and secure connection point for your reservoir or pump loop. Alternatively, the side ports are designed for 5/3mm hoses. This option suits builders who prefer soft tubing for easier routing around the graphics card. You must ensure your loop components match these specific thread sizes or hose diameters. The backplate does not operate independently. It relies on your pump and coolant flow to function. Once installed, the unit sits against the rear of your RTX 3090 Founders Edition card. The acrylic body remains transparent, allowing the ARGB lighting to display clearly. You do not need to adjust settings daily. The cooling performance depends entirely on your loop’s flow rate and coolant temperature. The nickel-plated copper base transfers heat from the card to the liquid. This active cooling reduces the overall temperature of the GPU. The unit weighs 2.5 pounds, which adds slight weight to the card’s rear. You should verify that your case has enough clearance for the added thickness and length. The installation process is straightforward if you are already familiar with custom loop assembly. No software or external controllers are involved in the cooling process itself. The lighting effects are managed by your main RGB controller. The backplate simply circulates coolant to keep the card cool during heavy loads.
Before you buy this backplate
This Alphacool unit is an active cooling component, not a standalone AIO. You must already own a compatible Alphacool Eisblock Aurora GPU block. The backplate connects to your existing loop to cool the rear of the card. Check your tubing size carefully. You can use G1/4" threaded ports or 5/3mm hose barbs. Ensure your pump has enough flow to handle the extra resistance. The acrylic body requires gentle cleaning. Avoid harsh chemicals that might cloud the material. ARGB lighting needs a compatible controller. Verify your motherboard supports the specific lighting protocol. This accessory fits best in a full custom loop. It does not replace a standard AIO. If you lack a loop, this part is useless alone. It is an upgrade for enthusiasts who want maximum thermal performance on RTX 3080 or 3090 Founders Edition cards. Plan your loop layout before purchasing. The nickel-plated copper core needs proper coolant to prevent corrosion. Keep your loop clean to maintain efficiency.
Check before you buy
- Verify you have a compatible Alphacool Eisblock Aurora GPU block.
- Confirm your loop supports G1/4" threads or 5/3mm hoses.
- Check if your motherboard handles the ARGB lighting protocol.
- Ensure your pump can handle the additional flow resistance.
- Validate fitment for RTX 3080 or 3090 Founders Edition cards.
The product at a glance
Alphacool RTX 3090 Acrylic Backplate
Best for: Custom loop builders with RTX 3090 FE cards
- 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 Alphacool backplate adds active water cooling to your RTX 3090 Founders Edition card. It uses nickel-plated copper and acrylic to transfer heat into your loop. The unit measures 8.11 inches long and weighs 2.5 pounds. You can connect it via G1/4 inch threads or 5/3mm hose ports. This upgrade helps lower GPU temperatures by circulating coolant through the backplate.
Pros
- Nickel-plated copper construction for heat transfer
- Dual connection options with G1/4 inch threads or 5/3mm hose ports
- Compatible with RTX 3080 and 3090 Founders Edition cards
- ARGB lighting support
Cons
- Requires a custom water cooling loop to function
- Heavy at 2.5 pounds, adding load to the GPU
- Limited to Founders Edition cards only
Good fit if
- You already have a custom water cooling loop
- You own an RTX 3090 Founders Edition graphics card
- You want to actively cool the back of your GPU
Skip if
- You use a non-Founders Edition RTX 3090 card
- You rely on air cooling for your components
- You need a drop-in replacement without tubing
Verdict: Alphacool RTX 3090 Acrylic Backplate is a specialized cooling add-on for custom loop builders. It fits RTX 3090 Founders Edition owners who want to integrate their GPU backplate into their existing water cooling circuit for better thermal performance.
Specifications side by side
| Spec | Alphacool RTX 3090 Acrylic Backplate |
|---|---|
| Lighting | ARGB |
| Material | Nickel-plated copper, acrylic |
| Thread Size | G1/4" |
| Dimensions | 8.11 × 4.72 × 0.51 inches |
| Weight | 2.5 pounds |
| Color | ARGB |
| Model | 13039 |
Frequently asked questions
Does the Alphacool RTX 3090 acrylic backplate include a GPU block?
No. The backplate is a separate component designed to attach to an existing Alphacool Eisblock Aurora GPU block. It does not contain the cold plate that touches the GPU die. You must purchase the GPU block separately to complete the active cooling solution for your card.
What tubing connections does this backplate use?
It features G1/4" internal threaded ports. These ports are located on the top side of the unit. This design allows you to connect standard tubing directly to the backplate. It integrates seamlessly into your custom loop without requiring adapters or complex fittings.
Is the backplate made of metal or plastic?
It uses a combination of materials. The main body is clear acrylic. The internal thermal components include nickel-plated copper. Acrylic allows you to see the ARGB lighting effects. Copper provides the necessary thermal mass for active cooling within your liquid loop.
What are the exact dimensions of this backplate?
The unit measures 8.11 inches in length. It is 4.72 inches wide and 0.51 inches thick. These dimensions are designed to fit the rear of RTX 3090 Founders Edition cards. The size ensures full coverage of the backside components.
Does this backplate support RGB lighting?
Yes. The model features ARGB capabilities. The clear acrylic body allows you to see these lighting effects. You can synchronize the lights with your other components. This adds a visual element to your custom loop while providing thermal benefits.
Can I use this backplate with non-Founders Edition cards?
No. It is specifically designed for RTX 3090 Founders Edition cards. The mounting points and dimensions match the reference design only. Other custom cards may have different shapes or mounting holes. Check your card model before purchasing to ensure compatibility.
How heavy is the Alphacool RTX 3090 backplate?
It weighs 2.5 pounds. This weight comes from the nickel-plated copper internals and the acrylic shell. Ensure your case and mounting points can support this additional mass. The weight helps with stability but requires secure installation to prevent sagging.