Best Alphacool Aio Liquid Coolers Under $100 in 2026: 15 Picks
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Finding the best alphacool aio liquid coolers under $100 requires balancing thermal performance with chassis clearance. This guide evaluates 15 liquid cooling options based strictly on specifications published on their product listings.
The Alphacool NexXxos 240mm Full Copper Radiator takes the top position because its pure copper construction and six G1/4-inch ports provide flexible dual-fan heat dissipation in a 1.81-inch thick frame. This comparison helps you decide which radiator dimensions, port layouts, and component configurations match the space inside your PC case.
Quick picks
The best fit for you
- You need a standard dual-fan copper radiator Alphacool NexXxos 240mm Full Copper Radiator Its 240mm copper core provides dual-fan cooling with six G1/4-inch port options for versatile loop routing.
- You need maximum cooling length in low vertical clearance Alphacool NexXxos ST30 360mm X-Flow Radiator It provides 360mm triple-fan cooling capacity in a slim 1.18-inch profile for tight vertical spaces.
- You build an ultra-compact small-form-factor cooling loop Alphacool NexXxoS XT45 60mm Dual Copper Radiator Its dual 60mm copper core measures 4.72 inches long to fit tight spaces where standard radiators cannot fit.
- You need a liquid reservoir for 1U rackmount chassis Alphacool ES Reservoir 1U DDC Pump Top The 1.57-inch height fits 1U server cases while offering multi-port routing and direct DDC pump compatibility.
Our 15 picks
Alphacool NexXxos 240mm Full Copper Radiator
Best for: dual-fan custom loops needing multiple ports
- Radiator Size
- 240mm
- Material
- Copper
- Dimensions
- 4.88 × 11 × 1.81 inches
- Weight
- 1.32 pounds
View on Amazon: Alphacool NexXxos 240mm Full Copper Radiator
This unit is a 240mm dual-fan liquid cooling radiator built with copper fins, channels, and chambers. It measures 46mm thick and features six G1/4-inch ports for flexible routing. You get standard dual 120mm fan spacing in a 280mm long black frame. It suits you if you build a custom loop and need balanced clearance with multiple port entry options across your chassis.
Pros
- Copper channels, fins, and chambers
- Six G1/4" connection ports
- Dual 120mm fan mount support
- 46mm thickness profile
Cons
- 46mm depth requires more clearance than slim radiators
- Fans and fittings not included in listing
Good fit if
- You need six G1/4" ports for flexible tube routing.
- You run a custom loop with dual 120mm fan mounts.
- You have chassis clearance for a 46mm thick core.
Skip if
- You need a slim 25mm or 30mm radiator profile.
- You want a complete pre-assembled system with pump and fans included.
Verdict: Alphacool NexXxos XT45 240mm Full Copper Radiator delivers solid dual-fan heat dissipation and six G1/4" port options. It serves as a dependable core component for 240mm custom loop builds.
Alphacool NexXxos UT60 140mm Full Copper Radiator
Best for: deep single 140mm custom loop mounts
- Radiator Size
- 140mm
- Material
- Copper
- Dimensions
- 7.32 × 5.67 × 2.36 inches
- Weight
- 1.76 pounds
View on Amazon: Alphacool NexXxos UT60 140mm Full Copper Radiator
This 140mm single-fan radiator gives you a thick 60mm profile designed for custom cooling loops. It features an all-copper internal construction with copper fins, channels, and chambers, paired with brass threads and steel side panels. You get six G1/4-inch ports for flexible tubing routing across your setup. It suits you if your PC chassis supports a 186mm long, 60mm thick radiator mount.
Pros
- Full copper fins, channels, and chambers
- Six G1/4-inch connection ports
- Thick 60mm profile for high thermal volume
- Solid brass threads and steel side panels
Cons
- 60mm thickness demands substantial case clearance
- Supports only a single 140mm fan
- Heavier unit at 1,130 grams bare
Good fit if
- You have clearance for a 60mm-thick radiator plus fans.
- You need six G1/4-inch ports for flexible loop routing.
- You require an all-copper single 140mm radiator core.
Skip if
- You need a slim profile radiator to avoid component collision.
- You plan to run a multi-fan 240mm or 280mm setup.
Verdict: Alphacool NexXxos UT60 140mm Copper Radiator delivers heavy-duty heat dissipation through its 60mm-deep copper core and versatile six-port layout. It is an ideal fit if your case has the depth clearance to support a thick single-fan radiator.
Alphacool NexXxoS ST30 280mm Copper Radiator
Best for: compact dual-140mm loop setups
- Radiator Size
- 280mm
- Material
- Copper
- Dimensions
- 12.6 × 5.67 × 1.18 inches
- Weight
- 0.86 kilograms
View on Amazon: Alphacool NexXxoS ST30 280mm Copper Radiator
This component is a 280mm liquid cooling radiator built with full copper material and finished in black. At 1.18 inches thick, 5.67 inches wide, and 12.6 inches long, it provides dual-140mm fan mounting space in a slim form factor. Weighing 0.86 kilograms, it suits your custom loop or expandable liquid setup if you have chassis mounts for 140mm-wide hardware and need a low-profile radiator to clear surrounding components.
Pros
- Full copper material construction
- Slim 1.18-inch height profile
- Standard 280mm dual-fan form factor
- Total weight of 0.86 kilograms
Cons
- Wider 5.67-inch frame requires specific 140mm case mounts
- Thinner 1.18-inch thickness provides less surface depth than 1.97-inch models
Good fit if
- You have case mounts tailored for a 280mm, 5.67-inch-wide radiator.
- You need a slim 1.18-inch-thick radiator to clear motherboard components or memory.
- You want a full copper radiator for your liquid loop.
Skip if
- You have a PC chassis that only supports 120mm-wide radiator mountings.
- You prefer a thicker 1.57-inch or 1.97-inch radiator for your setup.
Verdict: Alphacool NexXxoS ST30 280mm Copper Radiator delivers a full copper build in a slim 1.18-inch profile for cases that accommodate 280mm hardware. It gives you 12.6 inches of radiator length while keeping vertical clearance requirements low.
Alphacool NexXxoS XT45 92mm Copper Radiator
Best for: compact builds with 92mm fan mounts
- Radiator Size
- 92mm
- Material
- Copper
- Dimensions
- 3.94 × 3.94 × 2.36 inches
- Weight
- 15.9 ounces
This component is a compact 92mm liquid cooling radiator built from copper with a black finish. It measures 3.94 inches long, 3.94 inches wide, and 2.36 inches tall, weighing 15.9 ounces. If you build custom liquid loops inside compact cases with dedicated 92mm fan mounts, this single-fan unit gives you full copper construction in a small footprint.
Pros
- Full copper material construction
- Compact 92mm single-fan form factor
- 2.36-inch profile for medium thickness loops
- Total weight of 15.9 ounces
Cons
- Limited to 92mm fan mounts
- 2.36-inch height requires adequate case clearance
Good fit if
- You need a copper radiator designed for 92mm fan mounts.
- You have at least 2.36 inches of clearance for radiator thickness.
Skip if
- You require standard 120mm or 140mm fan mounting.
- You have tight clearance that cannot accommodate a 2.36-inch thick radiator.
Verdict: Alphacool NexXxoS XT45 92mm Copper Radiator provides an all-copper cooling option for small chassis with 92mm fan locations. Its 2.36-inch profile suits custom loop builders needing a small footprint.
Alphacool NexXxoS XT45 60mm Dual Copper Radiator
Best for: ultra-compact small-form-factor liquid cooling builds
- Radiator Size
- 60mm
- Material
- Copper
- Dimensions
- 4.72 × 2.36 × 2.36 inches
- Weight
- 0.41 kilograms
View on Amazon: Alphacool NexXxoS XT45 60mm Dual Copper Radiator
This component is an all-copper dual radiator built for compact custom liquid cooling loops. It measures 4.72 inches in length, 2.36 inches in width, and 2.36 inches in height, weighing 0.41 kilograms. You get copper construction across the core with a black finish. If you need a mini heat exchanger for small-form-factor builds or tight chassis enclosures, this unit provides targeted dual-fan cooling capacity in restricted spaces.
Pros
- Full copper material construction
- Compact footprint at 4.72 inches in length
- Lightweight build at 0.41 kilograms
- Designed for dual 60mm fan setups
Cons
- Much smaller surface area than 120mm or 140mm radiators
- 2.36-inch thickness requires adequate depth clearance
Good fit if
- You need a compact radiator for a small-form-factor PC enclosure.
- You want an all-copper core to match existing copper loop components.
Skip if
- You have chassis space for standard 120mm or 140mm radiators.
- You require high heat dissipation for multiple high-wattage components.
Verdict: Alphacool NexXxoS XT45 60mm Dual Radiator delivers an all-copper cooling core tailored specifically for space-constrained cases. It gives you targeted liquid cooling capacity where standard radiators cannot physically fit.
Alphacool NexXxoS XT45 Full Copper 60mm Triple Radiator
Best for: compact custom loops with 60mm mounts
- Radiator Size
- 60mm
- Material
- Copper
- Dimensions
- 7.09 × 2.36 × 2.36 inches
- Weight
- 1.14 pounds
View on Amazon: Alphacool NexXxoS XT45 Full Copper 60mm Triple Radiator
This unit is a custom loop radiator constructed entirely with copper material. It features a length of 7.09 inches, width of 2.36 inches, and height of 2.36 inches, with a total weight of 1.14 pounds. The profile matches 60mm fan mount configurations in compact installations. You get a dedicated triple 60mm form factor that suits small enclosures where standard 120mm or 140mm radiators cannot physically fit.
Pros
- Full copper material construction
- Compact 7.09-inch length fits restricted spaces
- Total weight of 1.14 pounds
- Narrow 2.36-inch width
Cons
- Requires 60mm fan mounts rather than common 120mm mounts
- Thickness of 2.36 inches requires adequate clearance
Good fit if
- You need a copper radiator for 60mm fan mounts.
- You have at least 2.36 inches of clearance for thickness.
- You are building a custom cooling loop in a tight chassis.
Skip if
- You require mounting for standard 120mm or 140mm fans.
- You need a slim profile under 2.36 inches deep.
Verdict: Alphacool NexXxoS XT45 Full Copper 60mm Radiator provides full copper construction for compact chassis setups. It delivers triple 60mm compatibility for systems unable to fit standard 120mm radiators.
Alphacool NexXxos ST30 360mm X-Flow Radiator
Best for: slim 360mm custom loop installations
- Radiator Size
- 360mm
- Material
- Copper
- Dimensions
- 16.3 × 4.88 × 1.18 inches
- Weight
- 1.51 pounds
View on Amazon: Alphacool NexXxos ST30 360mm X-Flow Radiator
This component is a 360mm triple-fan liquid cooling radiator built with an all-copper core. You get copper cooling channels, chambers, and fins housed inside steel side panels. The slim 30mm profile measures 413mm long and weighs 686g, providing cross-flow routing through four standard G1/4-inch threaded brass ports. It suits you if you need a high-surface-area 360mm heat exchanger that fits into tighter PC chassis clearances without adding bulk.
Pros
- Full copper channels, fins, and water chambers
- Slim 30mm thickness for tight clearance mounting
- Four G1/4-inch threaded connection ports
- Lightweight build at 686 grams
Cons
- Long 413mm total length requires extra chassis end clearance
- No fans included in specifications
Good fit if
- You need a slim 30mm thick 360mm triple-fan radiator.
- You want an all-copper core with four G1/4-inch ports.
Skip if
- You lack the 413mm lengthwise chassis clearance needed for end tanks.
- You require a smaller 120mm or 240mm mounting format.
Verdict: Alphacool NexXxoS ST30 Full Copper X-Flow 360mm delivers a full copper core and multi-port flexibility in a slim 30mm profile. It gives your liquid cooling loop extensive 360mm heat dissipation without demanding excessive vertical depth.
Alphacool NexXxos XT45 X-Flow 240mm Copper Radiator
Best for: cross-flow loops needing multiple connection options
- Radiator Size
- 240mm
- Material
- Copper
- Dimensions
- 11.5 × 4.88 × 1.77 inches
- Weight
- 1.03 kilograms
View on Amazon: Alphacool NexXxos XT45 X-Flow 240mm Copper Radiator
The Alphacool NexXxos XT45 240mm X-Flow Radiator is a dual-fan heat exchanger built with copper fins, channels, and chambers. It measures 293 x 124 x 45mm, giving you a 45mm thickness that provides substantial cooling surface. The unit features six G1/4-inch ports across both ends, facilitating cross-flow coolant pathways. This suits you if you plan custom loops through dual 120mm fan brackets and require multi-port connection flexibility.
Pros
- Copper cooling fins, channels, and chambers with brass threads
- Six G1/4-inch threaded ports for diverse connection angles
- 45mm core thickness for high thermal capacity
- Cross-flow (X-Flow) design for end-to-end fluid routing
Cons
- Overall length of 293mm exceeds standard 240mm radiator footprints
- 45mm thickness requires more chassis depth than slim radiators
Good fit if
- You want six G1/4-inch connection points for easier routing.
- You have clearance for a 45mm thick 240mm radiator.
- You prefer an inline X-Flow loop configuration.
Skip if
- You need a slim 25mm or 30mm profile radiator to clear motherboard components.
- You have tight front-to-back chassis dimensions under 293mm.
Verdict: Alphacool NexXxos XT45 240mm X-Flow Radiator provides durable all-copper core construction and versatile routing via six G1/4-inch ports. Its 45mm thickness makes it a solid cooling choice when your chassis allows the necessary clearance.
Alphacool NexXxoS ST25 240mm Copper Radiator
Best for: compact custom loops needing all-copper cooling
- Radiator Size
- 240mm
- Material
- Copper
- Dimensions
- 2.36 × 4.72 × 4.72 inches
- Weight
- 1.75 pounds
View on Amazon: Alphacool NexXxoS ST25 240mm Copper Radiator
This is a 240mm slim liquid cooling radiator built entirely with copper channels, fins, and end chambers. You get a black finish and a weight of 1.75 pounds, sized at 2.36 inches in length and 4.72 inches in width. It suits you if you need a 240mm radiator for your custom loop build that requires full copper construction across every internal component.
Pros
- Pure copper used for cooling fins, water channels, and end chambers
- Slim profile designed for space-conscious installations
- Lightweight design at 1.75 pounds
Cons
- No cooling fans included in the specifications
- No standalone pump or reservoir integrated
Good fit if
- You want pure copper construction across the fins, channels, and chambers.
- You need a 240mm radiator with a weight of 1.75 pounds.
Skip if
- You need an all-in-one cooler that includes fans and a pump out of the box.
- You require a larger 360mm radiator surface for your loop.
Verdict: Alphacool NexXxoS ST25 Slim Full Copper 240mm Radiator delivers full copper construction across its channels, fins, and end chambers in a compact profile. It suits your build when you need an all-copper 240mm core for a custom cooling loop.
Alphacool Aurora Acryl X4 RAM Water Block
Best for: custom loop memory cooling with digital RGB
- Lighting Type
- Digital RGB
- Material
- Acrylic
- Dimensions
- 6.3 × 2.76 × 1.57 inches
- Weight
- 5.28 ounces
The Alphacool Aurora Acryl X4 RAM Water Block is an individual memory cooling block designed for custom liquid loops. It features a 4 mm nickel-plated copper base plate, an acrylic top, and flush-mounted addressable digital RGB LEDs along the side. Measuring 128 x 45 x 19 mm, it works in combination with Alphacool D-RAM modules to manage memory heat in your custom loop.
Pros
- 4 mm thick nickel-plated copper cooling plate
- Flush-mounted addressable digital RGB LED side strip
- Compact 128 x 45 x 19 mm form factor
- Clear acrylic top construction
Cons
- Requires separate Alphacool D-RAM modules (model 17268)
- Cools memory modules only, not CPU or GPU components
- Does not include an integrated pump or radiator
Good fit if
- You want dedicated liquid cooling for your RAM modules.
- You plan to use compatible Alphacool D-RAM module heatsinks.
- You want embedded digital RGB lighting alongside your memory.
Skip if
- You need an all-in-one cooler with an integrated pump and radiator.
- You want a memory block that functions without separate adapter modules.
Verdict: Alphacool Aurora Acryl X4 RAM Water Block provides targeted memory cooling using a 4 mm nickel-plated copper plate and built-in digital RGB lighting. It suits custom loops that already utilize compatible Alphacool D-RAM modules.
Alphacool Eisball D5 Reservoir and Pump Top
Best for: D5 builds requiring illuminated high-capacity reservoirs
- Lighting Type
- Digital RGB
- Material
- Acrylic, Plexi
- Pump Compatibility
- D5
- Dimensions
- 4.63 × 5.04 × 5.04 inches
- Weight
- 1.42 pounds
This spherical liquid cooling unit serves as both a 700 ml reservoir and an integrated top for a D5 pump. Built from transparent nylon with an acetal pump holder, it incorporates digital RGB illumination across its acrylic body. Measuring 117.51 by 128 by 128 mm, it suits you if you want high fluid capacity paired with addressable lighting and plan to supply your own compatible D5 pump unit.
Pros
- 700 ml fluid capacity
- Integrated digital RGB lighting
- Compatible with D5 pump units
- Durable transparent nylon and acetal construction
Cons
- D5 pump is not included
- Spherical 128 mm dimensions require significant case clearance
Good fit if
- You plan to provide your own compatible D5 pump.
- You want a 700 ml reservoir with integrated digital RGB lighting.
Skip if
- You need a reservoir that includes an integrated pump.
- You have a compact case unable to fit a 128 mm wide sphere.
Verdict: Alphacool Eisball Digital RGB D5 Reservoir provides 700 ml of coolant capacity and digital RGB lighting in a spherical design. It serves as a sturdy mounting housing if you already have a compatible D5 pump.
Alphacool ES Reservoir 1U DDC Pump Top
Best for: 1U server chassis using DDC pumps
- Pump Compatibility
- DDC
- Dimensions
- 3.94 × 2.67 × 1.57 inches
- Weight
- 2.57 ounces
You get a compact reservoir and pump top combination unit engineered specifically for 1U server racks. It measures 67.9 by 100.2 by 40 millimeters and weighs 2.57 ounces. The unit features an integrated DDC pump top and provides seven G1/4 thread connections for flexible routing in tight spaces. You will find it suits low-profile server builds or compact custom liquid loops requiring dedicated DDC pump integration.
Pros
- Compact 40 mm height fits 1U server chassis
- Provides seven G1/4 connection ports for flexible loop routing
- Integrated pump top engineered for DDC pump compatibility
- Lightweight construction at 2.57 ounces
Cons
- Requires a separate DDC pump to function
- Lacks compatibility with D5 pumps
Good fit if
- You need a liquid reservoir and pump top that fits inside a 1U server enclosure.
- You plan to run a DDC pump in a space-constrained liquid loop.
- You require multiple G1/4 port options to route tubing around tight hardware.
Skip if
- You plan to build your cooling loop around a D5 pump.
- You want an all-in-one cooler that includes an integrated pump out of the box.
Verdict: Alphacool ES 1U DDC Reservoir and Pump Top provides multi-port connectivity and DDC pump integration in a 40 mm low-profile design. It gives you a practical reservoir solution designed specifically for cramped 1U rackmount enclosures.
Alphacool VPP Apex PWM D5 Pump
Best for: custom loops needing a D5-compatible pump motor
- Pump Speed
- 2500-4500 RPM
- Pump Compatibility
- D5
- Dimensions
- 1.61 × 2.56 × 2.56 inches
- Weight
- 9.74 ounces
This is a standalone liquid cooling pump designed for custom PC loops. You get an operating range of 2500 to 4500 RPM controlled via a 4-pin PWM header, delivering up to 340 liters per hour of coolant circulation. Power comes directly through a standard SATA connection. Built with a ceramic shaft, it fits standard D5-compatible tops and reservoirs. It suits you if you need a replacement pump motor for an existing custom loop.
Pros
- 2500 to 4500 RPM range with 4-pin PWM speed control
- 340 L/h flow rate for custom liquid loops
- Ceramic shaft engineered for low vibration and durability
- Uses standard SATA connector for power delivery
- Directly compatible with D5 pump tops and reservoirs
Cons
- Does not include a pump top or reservoir body
- Requires separate D5-compatible housing for loop integration
Good fit if
- You already own a D5 pump top or compatible reservoir.
- You want SATA power and motherboard PWM speed regulation.
Skip if
- You need a complete pump and reservoir combo out of the box.
- You are building around DDC pump mounts instead of D5 hardware.
Verdict: Alphacool VPP Apex D5 Water Cooling Pump provides dependable PWM-managed flow for custom loops up to 340 L/h. It installs directly into standard D5-format housings.
Alphacool NexXxoS ST20 140mm Copper Radiator
Best for: compact PC cases with 140mm mounts
- Radiator Size
- 140mm
- Material
- Copper
- Dimensions
- 6.73 × 5.51 × 0.79 inches
View on Amazon: Alphacool NexXxoS ST20 140mm Copper Radiator
This is a standalone 140mm liquid cooling radiator with a compact 0.79-inch height. Built with full copper water channels and cooling fins, it delivers thermal conductivity for single-fan custom loops. Its overall footprint measures 6.73 inches long by 5.51 inches wide. You will find it fits well in compact PC chassis where component clearance is limited, giving you standard 140mm fan mounting options in tight spaces.
Pros
- Pure copper cooling fins and internal water pathways
- Slim profile measuring 0.79 inches in thickness
- Single 140mm footprint fits smaller fan mounts
- Black finish matches standard chassis interiors
Cons
- Single 140mm size provides less cooling area than dual-fan radiators
- Slim 0.79-inch depth holds less fluid capacity than 1.18-inch models
Good fit if
- You need a thin 0.79-inch radiator to prevent motherboard clearance conflicts.
- You have a PC chassis restricted to a single 140mm cooling mount.
- You require an all-copper core for your custom cooling loop.
Skip if
- You have room for larger 240mm, 280mm, or 360mm radiators.
- You want a thicker radiator profile to maximize internal fluid volume.
Verdict: Alphacool NexXxoS ST20 140mm Copper Radiator delivers a slim 0.79-inch all-copper cooling option for tight chassis layouts.
Alphacool NexXxoS HPE-45 Full Copper 140mm Radiator
Best for: single 140mm fan mount custom loops
- Radiator Size
- 140mm
- Material
- Copper
- Dimensions
- 19.7 × 19.7 × 11 inches
View on Amazon: Alphacool NexXxoS HPE-45 Full Copper 140mm Radiator
This is a 140mm single-fan radiator built for custom liquid cooling loops. It features pure copper cooling fins and copper water-carrying parts finished in black. With its 140mm form factor and 1.77-inch profile height, it fits single 140mm fan mounts inside your case. You will find this suitable if you need a compact copper heat exchanger to add cooling capacity to a tight system without mounting larger multi-fan radiators.
Pros
- Pure copper cooling fins and water-carrying channels
- Standard 140mm single-fan form factor
- Black finish matches standard PC builds
- Part of a lineup with sizes ranging from 120mm to 480mm
Cons
- Single 140mm size offers less surface area than dual or triple radiator models
- Does not include fans, fittings, or cooling liquid
Good fit if
- You have a chassis mount designed for a single 140mm radiator.
- You require an all-copper build for both the fins and water channels.
- You want to add dedicated cooling surface area to a compact loop.
Skip if
- You need a larger 240mm, 280mm, or 360mm radiator for maximum cooling area.
- You have case mounts limited exclusively to 120mm fan spacing.
Verdict: Alphacool NexXxoS HPE-45 Full Copper 140mm Radiator delivers solid thermal dissipation with pure copper fins and channels in a single 140mm format. It is a dependable choice when you want all-copper loop construction in a compact footprint.
Specifications side by side
| Spec | Alphacool NexXxos 240mm Full Copper Radiator | Alphacool NexXxos UT60 140mm Full Copper Radiator | Alphacool NexXxoS ST30 280mm Copper Radiator | Alphacool NexXxoS XT45 92mm Copper Radiator | Alphacool NexXxoS XT45 60mm Dual Copper Radiator | Alphacool NexXxoS XT45 Full Copper 60mm Triple Radiator | Alphacool NexXxos ST30 360mm X-Flow Radiator | Alphacool NexXxos XT45 X-Flow 240mm Copper Radiator | Alphacool NexXxoS ST25 240mm Copper Radiator | Alphacool Aurora Acryl X4 RAM Water Block | Alphacool Eisball D5 Reservoir and Pump Top | Alphacool ES Reservoir 1U DDC Pump Top | Alphacool VPP Apex PWM D5 Pump | Alphacool NexXxoS ST20 140mm Copper Radiator | Alphacool NexXxoS HPE-45 Full Copper 140mm Radiator |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Radiator Size | 240mm | 140mm | 280mm | 92mm | 60mm | 60mm | 360mm | 240mm | 240mm | not specified | not specified | not specified | not specified | 140mm | 140mm |
| Pump Speed | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 2500-4500 RPM | not specified | not specified |
| Lighting Type | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Digital RGB | Digital RGB | not specified | not specified | not specified | not specified |
| Lighting | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Digital RGB | not specified | not specified | not specified | not specified |
| Material | Copper | Copper | Copper | Copper | Copper | Copper | Copper | Copper | Copper | Acrylic | Acrylic, Plexi | not specified | not specified | Copper | Copper |
| Pump Compatibility | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | D5 | DDC | D5 | not specified | not specified |
| Size | 240Mm | 140mm | 280mm | 92mm | 60mm | 60mm | 360Mm | 240Mm | 240Mm | not specified | not specified | not specified | not specified | 140mm | 140mm |
| Dimensions | 4.88 × 11 × 1.81 inches | 7.32 × 5.67 × 2.36 inches | 12.6 × 5.67 × 1.18 inches | 3.94 × 3.94 × 2.36 inches | 4.72 × 2.36 × 2.36 inches | 7.09 × 2.36 × 2.36 inches | 16.3 × 4.88 × 1.18 inches | 11.5 × 4.88 × 1.77 inches | 2.36 × 4.72 × 4.72 inches | 6.3 × 2.76 × 1.57 inches | 4.63 × 5.04 × 5.04 inches | 3.94 × 2.67 × 1.57 inches | 1.61 × 2.56 × 2.56 inches | 6.73 × 5.51 × 0.79 inches | 19.7 × 19.7 × 11 inches |
| Weight | 1.32 pounds | 1.76 pounds | 0.86 kilograms | 15.9 ounces | 0.41 kilograms | 1.14 pounds | 1.51 pounds | 1.03 kilograms | 1.75 pounds | 5.28 ounces | 1.42 pounds | 2.57 ounces | 9.74 ounces | not specified | not specified |
| Color | black | black | black | black | black | not specified | not specified | not specified | Black | Black | Argb | Black | Black | Black | Black |
| Model | 14164 | 14176 | 14197 | 14226 | 14223 | 14224 | 1011658 | 14234 | 14250 | 17467 | 15362 | 15377 | 13339 | 14443 | not specified |
You can evaluate how these liquid units match against other thermal hardware by reviewing the best CPU coolers under 100.
How to Choose Alphacool Liquid Cooling Components
-
Check Fan Mounting Dimensions
You must match the radiator size to the fan mounting positions in your case. Standard PC enclosures feature 120mm or 140mm mounting points, but compact cases require smaller hardware. For example, the Alphacool NexXxoS XT45 92mm Copper Radiator suits chassis designed specifically for 92mm fan locations. Compare your chassis fan bracket spacing before buying. Radiators designed for 60mm or 92mm fans will not align with standard 120mm screw holes, so verify your case mount spacing first.
-
Select Coolant Port Layouts
You should examine the port layout to plan your loop tubing path. Standard radiators place inlet and outlet ports on one end tank. Cross-flow radiators route coolant from one side across to the opposite end. The Alphacool NexXxos XT45 X-Flow 240mm Copper Radiator uses this inline design with six G1/4-inch ports. This setup simplifies tubing runs across opposite ends of a case. Check whether an end-to-end flow path or a single-side port cluster best matches your custom loop route.
-
Evaluate Coolant Reservoir Capacity
You need to account for reservoir volume and physical dimensions when designing a loop. Larger reservoirs hold more fluid, which simplifies the filling and bleeding process. The Alphacool Eisball D5 Reservoir and Pump Top holds 700 ml of coolant, but its spherical shape measures 5.04 inches wide and tall. If your build has plenty of open space, high fluid volume gives you extra reserve capacity. In contrast, smaller cases require compact cylindrical or flat reservoir blocks.
-
Verify Server Rack Clearance
You must evaluate vertical clearance when building liquid cooling for rackmount servers. Standard desktop liquid cooling parts exceed server chassis heights. The Alphacool ES Reservoir 1U DDC Pump Top features a 40 mm height, which is 1.57 inches, allowing it to fit inside tight 1U server racks. If you use standard desktop cases, low-profile height is not required. However, for 1U rack enclosures, you must confirm that the pump top and reservoir height specification remains under 1.75 inches.
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Assess Pump Flow Control
You should review pump speed control and rated flow capacity to maintain proper coolant circulation. Pumps with PWM control let your motherboard manage operating speeds automatically based on component temperatures. The Alphacool VPP Apex PWM D5 Pump delivers flow rates up to 340 L/h while using standard PWM regulation. If your custom loop contains multiple blocks and radiators, check the pump flow capacity. Higher flow ratings keep coolant moving smoothly through complex loops with high flow resistance.
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Verify Component Base Materials
You should verify the metals and housing materials across your loop to prevent corrosion. Radiators with copper channels and copper fins pair safely with copper or nickel-plated copper water blocks. The Alphacool Aurora Acryl X4 RAM Water Block utilizes a 4 mm nickel-plated copper plate alongside an acrylic top. Pure copper and nickel-plated copper surfaces can coexist in the same liquid circuit without galvanic issues. Always check the material specification table to confirm your chosen parts use compatible metals.
Frequently asked questions
Are these Alphacool liquid cooling components pre-assembled AIO units?
No. These products are individual custom loop parts rather than closed-loop, pre-filled AIO coolers. The guide includes standalone radiators, pump tops, reservoirs, and pumps such as the VPP Apex D5. You must assemble these parts with tubing, fittings, and coolant to create an operational liquid cooling loop.
What coolant flow rate does the Alphacool VPP Apex PWM pump deliver?
The Alphacool VPP Apex PWM pump delivers a maximum flow rate of up to 340 L/h. It fits standard D5 pump tops and reservoir housings. Measuring 2.56 inches wide, 2.56 inches high, and 1.61 inches long, the unit provides PWM-managed fluid circulation for custom PC cooling setups.
How much liquid capacity does the Alphacool Eisball reservoir provide?
The Alphacool Eisball reservoir provides 700 ml of coolant capacity inside its spherical acrylic housing. It includes integrated digital RGB lighting and mounts directly to compatible D5 pumps. Its body measures 5.04 inches wide, 5.04 inches high, and 4.63 inches long for installation in spacious chassis mounts.
Which pump form factor fits the Alphacool ES 1U reservoir?
The Alphacool ES 1U reservoir is engineered exclusively for DDC pumps. It features a compact 40 mm profile, measuring 2.67 inches wide, 1.57 inches high, and 3.94 inches long. This flat configuration enables you to install a functional pump and reservoir combination inside compact 1U server chassis.
What hardware do you need to install the Alphacool Aurora Acryl X4 RAM block?
You need compatible Alphacool D-RAM modules to mount the Alphacool Aurora Acryl X4 RAM block. The block features a 4 mm nickel-plated copper cold plate, an acrylic top, and digital RGB lighting. It measures 6.3 inches long, 2.76 inches wide, and 1.57 inches high to cool memory sticks.
Can you fit 60mm Alphacool radiators into standard computer cases?
You can fit them only if your chassis provides dedicated 60mm fan mounts or bracket adapters. Radiators like the NexXxoS XT45 60mm Dual and Triple measure 2.36 inches in width and height. They are designed for small-form-factor cases and server racks unable to accommodate conventional 120mm hardware.
How do Alphacool X-Flow radiators route liquid through your loop?
Alphacool X-Flow radiators route liquid into one end of the radiator and out the opposite end. Standard radiators place both the inlet and outlet ports on a single end tank. Models such as the NexXxos ST30 360mm X-Flow allow direct, straight-through tubing runs across long chassis compartments.