Alphacool Eisball 700ml D5 Reservoir Review (2026): A Spec-Based Look
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This alphacool eisball reservoir pump combo review covers a specific build component designed for clarity and flow. You get a 700 ml ball reservoir made from transparent nylon and a D5 pump integrated into an acetal holder. The unit measures 128 mm in height and width, with a depth of 117.51 mm. It features digital RGB lighting, allowing you to sync colors with your system. The total weight is 2.03 pounds. This setup is intended for builders who want a clear view of coolant levels and flow rates within a custom loop.
What stands out
- 700 ml capacity for extended runtime
- Transparent nylon ball for clear visibility
- Integrated D5 pump for strong flow
- Digital RGB lighting for customization
Who it fits
Good fit for
You should consider this combo if you prioritize visual clarity in your custom loop. The 700 ml volume provides a buffer against overheating during long sessions. The D5 pump offers reliable performance for standard water cooling setups. If you want to see your coolant moving through a clear ball, the transparent nylon material delivers on that promise. The digital RGB feature lets you match the lighting to your existing case aesthetic without needing separate controllers.
Who should skip it
You might want to look elsewhere if you need a larger reservoir. The 700 ml capacity is moderate, not massive. If you prefer a completely silent system, note that the D5 pump is not inherently quiet. You also need to ensure your case can accommodate the 128 mm height. If you are building a small form factor PC, this unit may not fit your spatial constraints. Additionally, if you do not want digital RGB, this feature will be unnecessary for your build.
Verdict: The Alphacool Eisball 700ml D5 Reservoir is a straightforward, spec-driven choice for builders who want clear visibility and reliable pumping. It fits well into standard custom loops where aesthetics and coolant volume matter.
Alphacool Eisball Key Specs Explained
Capacity: 700 ml
This volume provides ample fluid for custom loops without excessive weight. You benefit from stable thermal performance and reduced need for frequent top-offs. The size fits standard mid-tower cases easily. When shopping, compare this to smaller 500 ml tanks or larger 1.5 liter options to find the right balance for your loop size and case constraints.
Material: transparent nylon
Transparent nylon offers high clarity for viewing fluid flow and air bubbles. You get a durable material that resists cracking better than standard acrylic. This clarity helps you monitor system health. When comparing reservoirs, note that some use opaque materials or cheaper plastics. This choice ensures you can see your loop clearly while maintaining structural integrity over time.
Lighting Type: Digital RGB
Digital RGB allows individual LED control for complex lighting effects. You can sync colors with motherboard software for a unified aesthetic. This feature adds visual flair to your build. When shopping, distinguish this from standard static RGB or analog ARGB. Digital control offers more precision for enthusiasts who want specific patterns or color gradients in their reservoir.
Pump Compatibility: D5
This reservoir is designed specifically for the popular D5 pump. You get a secure fit without needing adapters or custom mounts. The D5 pump provides strong flow rates for custom loops. When comparing, ensure your chosen pump matches this interface. This compatibility simplifies assembly and reduces the risk of leaks caused by mismatched components or improper seating.
Design and Build Materials
The listing specifies the reservoir is crafted from transparent nylon. This material choice prioritizes clarity and durability. You get a clear view of fluid levels and flow without the risk of cracking associated with some plastics. The pump holder is made from acetal. Acetal is known for its strength and low friction. This ensures the D5 pump remains secure and stable during operation.
Dimensions are listed as 117.51 mm wide, 128 mm deep, and 128 mm high. The spherical shape requires careful case selection. You must verify clearance for the ball’s curvature. The unit weighs 2.03 pounds. This weight is manageable for standard mounting but adds mass to your loop’s support structure. The compact footprint allows it to fit in mid-tower cases, though you should check internal spacing.
Lighting is described as Digital RGB. This indicates addressable control rather than static colors. You can sync the lighting with motherboard software for a unified aesthetic. The finish is smooth and clear. This enhances the visual appeal of your coolant. The design focuses on function and visibility. You get a reliable reservoir that integrates easily into most custom builds without requiring excessive space or complex mounting solutions.
Setup and everyday use
Installing this unit requires careful planning due to its specific dimensions. The reservoir measures 128 mm in height and width, with a depth of 117.51 mm. You must ensure your case has sufficient clearance for this spherical shape. The pump holder is made of acetal, which provides a secure mount for the D5 pump. You need to verify that your loop fittings align with the standard ports on this combo. The transparent nylon construction allows you to monitor fluid levels easily. This clarity helps you maintain optimal coolant volumes without opening the case. Digital RGB lighting adds visual appeal to your build. You can sync this lighting with your motherboard’s ARGB headers. The 700 ml capacity means you will fill the loop less often. This reduces maintenance frequency compared to smaller tanks. The unit weighs 2.03 pounds, so you need sturdy mounting points. Ensure your tubing can handle the curvature around the ball shape. Daily use involves checking for leaks after the initial fill. The D5 pump offers reliable flow rates for standard custom loops. You benefit from the acoustic profile of the D5, which is generally quiet at lower speeds. The acetal holder dampens vibration slightly. You should clean the transparent nylon periodically to maintain visibility. Dust accumulation can obscure the fluid level view. The digital RGB feature allows for customization without extra controllers. You integrate it directly into your system’s lighting software. This setup is best for builders who prioritize aesthetics and capacity. The combination of materials ensures durability over time. You get a stable platform for your cooling loop.
Before You Buy This Reservoir
This unit is a reservoir and pump combo, not a complete cooling solution. You must source compatible tubing, fittings, and a radiator separately. The D5 pump is included, but ensure your loop design supports its flow rate. Check that your case has enough internal space for the 128 mm height and width. The transparent nylon body requires regular cleaning to maintain clarity. Use only distilled water or high-quality coolant to prevent algae growth inside the ball. This component suits builders who want a visible, spherical aesthetic with reliable pump integration. It does not replace an AIO cooler. You are building a custom loop, so verify all connection points match your chosen fittings. The acetal pump holder is durable, but ensure it aligns with your reservoir’s base. Plan your tubing routes carefully around the spherical shape. This choice fits well if you prioritize visual impact and modular component selection over pre-assembled simplicity.
Check before you buy
- Verify case clearance for 128 mm height and width.
- Ensure you have separate tubing and fittings for connections.
- Confirm your loop design supports the D5 pump flow.
- Plan tubing routes around the spherical reservoir shape.
The product at a glance
Alphacool Eisball 700ml D5 Reservoir
Best for: large capacity D5 pump loops
- Lighting
- 22 digital RGB LEDs, 5VDC, 4-Pin
- Reservoir Capacity
- 700 ml
- Thread Size
- G1/4
- Material
- Acrylic, Plexi
- Dimensions
- 2.01 × 5.04 × 5.04 inches
- Weight
- 2.03 pounds
View on Amazon: Alphacool Eisball 700ml D5 Reservoir Affiliate link
This Alphacool Eisball combines a 700 ml transparent nylon reservoir with a D5 pump. It measures 117.51 x 128 x 128 mm and weighs 2.03 pounds. The unit features digital RGB lighting for visual customization. You get a solid acrylic and plexi build for your loop. It suits builders who want a large, spherical reservoir with integrated pump support.
Pros
- 700 ml reservoir capacity for ample fluid volume
- Integrated D5 pump compatibility for high flow
- Digital RGB lighting for customizable aesthetics
- Transparent nylon material for clear fluid visibility
Cons
- No mention of software control for lighting
- No included remote for manual adjustments
- Fixed digital RGB limits color precision
Good fit if
- You need a large 700 ml reservoir
- You are using a D5 pump
- You want digital RGB lighting
Skip if
- You require addressable RGB control
- You need software synchronization
- You prefer a smaller footprint
Verdict: Alphacool Eisball 700ml D5 Reservoir fits builders who prioritize capacity and D5 pump integration. It offers a clear view of your coolant with basic digital RGB lighting.
Specifications side by side
| Spec | Alphacool Eisball 700ml D5 Reservoir |
|---|---|
| Lighting | 22 digital RGB LEDs, 5VDC, 4-Pin |
| Reservoir Capacity | 700 ml |
| Thread Size | G1/4 |
| Material | Acrylic, Plexi |
| Dimensions | 2.01 × 5.04 × 5.04 inches |
| Weight | 2.03 pounds |
| Size | 700 mL" |
| Color | ARGB |
| Model | 13324 |
Frequently asked questions
What is the exact capacity of the Alphacool Eisball reservoir?
The Alphacool Eisball 700ml D5 Reservoir holds 700 milliliters of coolant. This volume provides ample fluid for custom loops, ensuring stable thermal performance. You benefit from reduced need for frequent top-offs compared to smaller tanks. The large capacity also helps dampen noise and air bubbles in your system.
Does this reservoir include a pump?
Yes, this unit integrates a D5 pump directly into the base. The product is listed as a reservoir and pump combo. You get a clear view of your coolant with the transparent body. The D5 pump is known for high flow rates, making it suitable for large capacity loops.
What lighting options are available on this model?
The reservoir features digital RGB lighting. You can customize the color and effects to match your build. The lighting is embedded within the acrylic body. This allows for even illumination of the coolant and internal components without harsh hotspots.
What materials are used to build the Alphacool Eisball?
The reservoir is constructed from acrylic and plexi. These materials offer high clarity and durability. You get a transparent view of fluid levels and flow. The pump holder is made from acetal, which provides a secure fit for the D5 pump. This combination ensures long-term reliability.
How large is the Alphacool Eisball reservoir?
The unit measures 5.04 inches in width and height, with a length of 2.01 inches. It weighs approximately 2.03 pounds. These dimensions allow it to fit standard mid-tower cases. You must ensure sufficient clearance for its spherical shape during installation.
Is the Alphacool Eisball compatible with other pumps?
No, this specific model is designed exclusively for D5 pumps. The base includes an integrated acetal holder for the D5. You cannot easily swap in other pump types like the DDC without modification. Check your loop design to ensure it supports the D5 flow rate.
What is the model number for this reservoir?
The model number is 13324. You can use this identifier to find exact specifications and compatibility details. It helps distinguish this 700ml version from other sizes in the Alphacool lineup. Search using this number to locate replacement parts or accessories.