200ml or 250mm Water Cooling Parts? Compared by Specs
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You are looking at two distinct reservoir options for your custom loop. This 200ml vs 250mm water cooling part comparison highlights their core differences. Both units support addressable lighting and fit standard pump bodies. The main difference lies in their physical design and capacity metrics. One uses a compact acrylic block with a flat profile. The other employs a tall glass tube design. You need to decide which form factor matches your case space and aesthetic goals.
Key differences
| Aspect | Phanteks Glacier R220C Acrylic Reservoir | Alphacool Eisbecher Aurora 250mm Acetal Reservoir |
|---|---|---|
| Reservoir Capacity | 200ml | 250mm |
| Material | Acrylic | Acetal |
| Lighting | Digital-RGB | D-RGB |
| Pump Compatibility | DDC | D5 |
| Height | 1.34 inches | 9.53 inches |
Which one should you choose?
Choose Phanteks Glacier R220C Acrylic Reservoir if
- You use a DDC pump and need a low-profile reservoir.
- You prefer acrylic construction and integrated RGB control.
- You have limited vertical space inside your case.
Choose Alphacool Eisbecher Aurora 250mm Acetal Reservoir if
- You use a D5 pump and want a tall glass tube.
- You prefer acetal material for durability and clarity.
- You want a vertical display piece with fountain lighting effects.
Verdict: The Phanteks Glacier R220C suits builders with DDC pumps who need a compact, low-profile reservoir. The Alphacool Eisbecher Aurora is better for D5 pump users seeking a tall, vertical glass tube design. Choose based on your pump type and available vertical clearance.
200ml vs 250mm Reservoir Specs
Reservoir Capacity
The Phanteks Glacier R220C offers a 200ml volume. This compact size fits well in smaller cases or tight builds. The Alphacool Eisbecher Aurora is listed with a 250mm height. This measurement describes the tube length, not the fluid volume. You cannot directly compare milliliters to millimeters. The Phanteks gives you a clear liquid capacity number. The Alphacool gives you a physical dimension. You need to check the Alphacool manual for exact ml. The Phanteks is more transparent about its fluid holding space.
Pump Compatibility
The Phanteks unit is designed specifically for the DDC pump. It integrates the pump body into the reservoir structure. This creates a single vertical or horizontal unit. The Alphacool reservoir requires a separate D5 pump body. The listing notes the pump is not included. You must buy the D5 pump separately. The D5 pump is a standard industry component. The Phanteks solution is more all-in-one. The Alphacool allows you to choose your own D5 source.
Lighting Type
Both units support addressable RGB lighting. The Phanteks uses Digital-RGB. This allows synchronization with compatible Phanteks cases or motherboards with a 3-pin header. The Alphacool uses D-RGB. It features a water fountain tube effect. D-RGB is a common standard for many controllers. Digital-RGB is also widely supported. Both provide visual customization. The lighting style differs slightly in effect. The control method is similar in practice. Neither has a clear advantage in compatibility.
Material Construction
The Phanteks reservoir is made from transparent acrylic. This material is durable and shatter-resistant. It provides a clear view of the coolant. The Alphacool reservoir is made from acetal. Acetal is a strong engineering plastic. It is often used for fittings and pumps. The glass tube is mentioned in the title. The specs list acetal as the material. Acetal is opaque or translucent. The acrylic offers better visibility for coolant levels.
Mounting Options
The Phanteks includes a universal 120/140mm fan mounting bracket. You can mount it vertically or horizontally. This flexibility helps with airflow planning. The Alphacool dimensions are 77 x 77 x 242mm. It is a tall tube. The listing does not mention a bracket. You may need separate mounting hardware. The Phanteks design simplifies installation. The Alphacool requires more planning for secure attachment. The Phanteks is easier to install.
Physical Dimensions
The Phanteks measures 8.66 x 3.15 x 1.34 inches. It is wide and flat. This profile fits behind motherboards or in side panels. The Alphacool measures 3.03 x 3.03 x 9.53 inches. It is tall and narrow. This shape fits in tower cases or specific corners. The Phanteks takes up more width. The Alphacool takes up more height. Neither is strictly smaller. They occupy different spaces in your case.
Choose the right reservoir for your loop
Small case builders needing compact volume
You have limited space inside your chassis. The Phanteks Glacier R220C measures 8.66 by 3.15 by 1.34 inches. Its 200ml capacity fits tight builds. The flat profile allows horizontal or vertical mounting. You get integrated Digital-RGB lighting that syncs with compatible cases. This compact design prioritizes fitment in constrained environments without sacrificing visual appeal.
Users wanting tall glass tube aesthetics
You prefer a vertical glass tube look. The Alphacool Eisbecher Aurora stands 9.53 inches tall. Its 250mm height defines the tube length, creating a distinct visual presence. The acetal material offers a different texture than acrylic. You can pair it with a D5 pump for a classic setup. The D-RGB lighting creates a fountain effect, enhancing the aesthetic in open or spacious cases.
Builders seeking flexible port placement
You need versatile tubing connections for your loop. The Pheks unit provides multiple ports for flexible water loop planning. Its universal 120 or 140mm fan bracket adds mounting options. The Viton rubber O-ring ensures durability and sealing. You can sync the Digital-RGB lighting with motherboards supporting 3-pin headers. This flexibility helps you design a clean and functional custom cooling loop.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Phanteks Glacier R220C Acrylic Reservoir | compact DDC loops with 200ml capacity | Check price of Phanteks Glacier R220C Acrylic Reservoir on Amazon |
| 2 | Alphacool Eisbecher Aurora 250mm Acetal Reservoir | Tall D5 pump builds with glass tubes | Check price of Alphacool Eisbecher Aurora 250mm Acetal Reservoir on Amazon |
The products compared
Phanteks Glacier R220C Acrylic Reservoir
Best for: compact DDC loops with 200ml capacity
- Reservoir Capacity
- 200ml (what this guide is about)
- Lighting
- Digital-RGB
- Material
- Acrylic
- Pump Compatibility
- DDC
- Dimensions
- 3.15 × 8.66 × 1.34 inches
View on Amazon: Phanteks Glacier R220C Acrylic Reservoir Affiliate link
This Phanteks Glacier R220C is a 200ml combo reservoir designed specifically for DDC pumps. It features a transparent acrylic body with an integrated digital-RGB lighting system. The unit supports both vertical and horizontal mounting. It includes a universal fan bracket for 120mm or 140mm fans. The design uses a unique inner tube to reduce air bubbles. It connects to motherboards via a 3-pin digital-RGB header.
Pros
- 200ml capacity for DDC pumps
- Integrated digital-RGB lighting
- Vertical or horizontal mounting options
- Universal 120/140mm fan bracket
Cons
- Smaller 200ml capacity compared to 250mm alternatives
- Requires specific 3-pin digital-RGB header or compatible case
- Limited to DDC pump compatibility
Good fit if
- You use a DDC pump in your loop
- You want vertical or horizontal mounting flexibility
- You prefer a compact 200ml reservoir size
Skip if
- You need a 250mm or larger reservoir capacity
- You use a D5 pump instead of DDC
- Your motherboard lacks a 3-pin digital-RGB header
Verdict: Phanteks Glacier R220C 200ml DDC Reservoir suits builders who prioritize compact 200ml volume and DDC pump integration. It fits well in small form factor builds where space is limited.
Alphacool Eisbecher Aurora 250mm Acetal Reservoir
Best for: Tall D5 pump builds with glass tubes
- Reservoir Capacity
- 250mm (what this guide is about)
- Lighting
- 12 digital aRGB LEDs, 5V
- Material
- Glass tube, acetal, aluminum
- Thread Size
- G1/4
- Pump Compatibility
- D5
- Dimensions
- 3.03 × 3.03 × 9.53 inches
View on Amazon: Alphacool Eisbecher Aurora 250mm Acetal Reservoir Affiliate link
This Alphacool reservoir uses a 250mm glass tube with a D5 pump body. It measures 77 x 77 x 242mm and weighs 1.66 pounds. The unit features D-RGB lighting with a water fountain effect. You get a clear view of your coolant flow. It suits builders who want a tall, visible loop component. Note that the pump is not included in the box.
Pros
- 250mm glass tube reservoir size
- D-RGB lighting with water fountain effect
- Compatible with D5 pump bodies
- Acetal material construction
Cons
- Pump is not included
- No app or remote control mentioned
- Heavier at 1.66 pounds
Good fit if
- You want a 250mm tall reservoir
- You use a D5 pump
- You prefer glass over acrylic
Skip if
- You need a complete pump-reservoir combo
- You prefer a smaller 200mm footprint
- You want wireless lighting control
Verdict: Alphacool 250mm Glass Reservoir fits users who prioritize height and glass aesthetics in their custom loop. It pairs well with D5 pumps for a tall, illuminated coolant display.
Specifications side by side
| Spec | Phanteks Glacier R220C Acrylic Reservoir | Alphacool Eisbecher Aurora 250mm Acetal Reservoir |
|---|---|---|
| Lighting | Digital-RGB | 12 digital aRGB LEDs, 5V |
| Material | Acrylic | Glass tube, acetal, aluminum |
| Reservoir Capacity | 200 ml | not stated |
| Thread Size | not stated | G1/4 |
| Pump Compatibility | DDC | D5 |
| Dimensions | 3.15 × 8.66 × 1.34 inches | 3.03 × 3.03 × 9.53 inches |
| Weight | not stated | 1.66 pounds |
| Size | 200 ml | 250mm |
| Color | Black | Black |
| Model | PH-R220C_02 | 15379 |
Frequently asked questions
Is a 200ml reservoir better than a 250mm one for small cases?
Yes, if you have limited space. The Phanteks Glacier R220C measures just 1.34 inches in height. Its flat profile allows it to fit horizontally or vertically in tight chassis. The 250mm Alphacool model is much taller at 9.53 inches, which requires more vertical clearance inside your case.
Which pump works with the 200ml acrylic reservoir?
The Phanteks Glacier R220C is designed specifically for DDC pumps. It integrates directly with these pump bodies for a compact loop. The 250mm Alphacool reservoir is compatible with D5 pumps. You must match your pump type to the reservoir design for proper fitment.
Does the 250mm reservoir hold more coolant than the 200ml one?
The 250mm label refers to height, not fluid volume. The Alphacool Eisbecher Aurora is a tall tube. The Phanteks unit explicitly states a 200ml capacity. You cannot assume the taller tube holds more fluid without checking its specific volume rating.
Can I use RGB lighting on both reservoirs?
Yes, both units support addressable lighting. The Phanteks Glacier R220C features digital RGB. The Alphacool Eisbecher Aurora also includes lighting options. You can illuminate your coolant in both designs, though the tall tube offers a different visual display style.
Which reservoir is lighter?
The Alphacool Eisbecher Aurora weighs 1.66 pounds. The Phanteks Glacier R220C weight is not listed in the data. The Phanteks unit is made of acrylic, while the Alphacool uses acetal material. The material choice affects the overall weight and durability of the reservoir.
What material is the 200ml reservoir made of?
The Phanteks Glacier R220C is constructed from acrylic. This material provides a clear view of the coolant. The Alphacool Eisbecher Aurora uses acetal for the body. Acetal is a durable plastic often used in high-pressure water cooling components.