Best 120Mm Aio Liquid Coolers in 2026: 15 Picks Ranked by Specs
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Choosing a 120Mm aio liquid cooler requires matching dimensions directly to your PC chassis space. This guide ranks 15 products based strictly on the specifications published on their listings. The Alphacool NexXxoS XT45 120mm Copper Radiator leads the ranking because of its copper construction, 46mm core thickness, and versatile six G1/4-inch ports.
Chassis clearance and loop routing dictate the proper hardware choice for your build. This comparison helps you decide which model fits your case depth, port configuration, and tubing layout.
Quick picks
The best fit for you
- You need flexible plumbing options for custom loops Alphacool NexXxoS XT45 120mm Copper Radiator Six G1/4-inch connection ports and a 46mm copper core provide versatile tubing layout options.
- You need an all-in-one cooler for AM5 builds Thermaltake TH120 ARGB Snow Edition 120mm It features built-in AM5 and LGA 1700 socket compatibility with ARGB lighting.
- You have deep case clearance for maximum thickness Alphacool NexXxoS Monsta 120mm Radiator The 3.54-inch core profile provides exceptional radiator thickness for cases with ample mounting depth.
- You want a slim radiator for compact aluminum loops DIYhz 120mm 12-Pipe Aluminum Radiator A slim 1.06-inch profile and 12-pipe aluminum structure fit restricted custom loop mounting locations.
Our 15 picks
Alphacool NexXxoS XT45 120mm Copper Radiator
Best for: custom loops requiring multiple port options
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 4.88 × 6.18 × 1.81 inches
- Weight
- 1.32 pounds
View on Amazon: Alphacool NexXxoS XT45 120mm Copper Radiator
This 120mm radiator provides a 46mm-thick core built with copper fins, channels, and chambers. It includes six G1/4-inch threaded ports, giving you flexible routing paths for custom liquid cooling loops compared to standard radiators. Steel side panels add structure to the assembly. If you need a compact single-fan copper radiator with multiple connection points for tight computer cases, this unit gives you adaptable port placement without requiring extra adapters.
Pros
- Six G1/4-inch threaded ports for loop plumbing
- All-copper fins, channels, and water chambers
- 46mm core thickness for single-fan heat dissipation
- Protective steel side panels
Cons
- 46mm thickness requires more clearance than slim 25mm to 30mm radiators
- Weight of 784g before adding fluid or fans
Good fit if
- You need six G1/4-inch ports for flexible tubing or drain placement.
- You have at least 46mm of mounting depth to clear the radiator frame.
- You want full copper channels and fins rather than aluminum.
Skip if
- You need a slim 20mm to 30mm radiator for shallow chassis mounts.
- You want an all-in-one unit with integrated pump and fans out of the box.
Verdict: Alphacool NexXxos XT45 120mm Copper Radiator delivers solid single-fan cooling capacity with a 46mm copper core and versatile plumbing options across six G1/4-inch ports.
Alphacool NexXxos UT60 120mm Copper Radiator
Best for: thick single-fan custom loop configurations
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 4.72 × 4.72 × 2.76 inches
- Weight
- 1.76 pounds
View on Amazon: Alphacool NexXxos UT60 120mm Copper Radiator
This component is a 120mm single-fan radiator built for custom liquid cooling loops. It gives you an extra-thick 60mm profile measuring 157 by 124 by 60mm, paired with a solid 1,004-gram build. The core uses copper channels, copper fins, and copper chambers alongside brass threads and steel side panels. You also receive six G1/4-inch ports for flexible tubing routes. It suits you if your chassis has ample clearance for deep radiators.
Pros
- Thick 60mm profile provides large internal surface area
- All-copper channels, copper fins, and copper chambers
- Six G1/4-inch connection ports for routing flexibility
- Durable construction with steel side panels and brass threads
Cons
- 60mm thickness requires substantial case clearance
- Heavier 1,004g empty weight requires secure mounting
- Does not include cooling fans or an integrated pump
Good fit if
- You have chassis space for a thick 60mm radiator.
- You want copper channels, copper fins, and copper chambers.
- You need six G1/4-inch ports for versatile tubing pathways.
Skip if
- You need a slim radiator to clear motherboard components.
- You want a pre-assembled unit with included fans and pump.
Verdict: Alphacool NexXxos UT60 120mm Copper Radiator delivers substantial thermal mass with its 60mm copper core and six connection ports. It suits custom liquid loops where your case provides ample mounting depth.
Alphacool NexXxos ST30 120mm Copper Radiator
Best for: compact single-fan custom liquid cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 6.18 × 4.88 × 1.18 inches
- Weight
- 0.47 kilograms
View on Amazon: Alphacool NexXxos ST30 120mm Copper Radiator
This 120mm radiator features a slim 30mm thickness designed for compact PC builds where space is limited. Built with copper chambers, fins, and channels, it optimizes heat conduction through standard G1/4-inch ports. Weighing 469 grams with steel side panels and brass threads, it fits single 120mm fan configurations. You will find it fits custom loops requiring a low-profile 157 by 124mm footprint without demanding excess clearance inside your chassis.
Pros
- Copper cooling core with copper fins, channels, and chambers
- Slim 30mm profile allows installation in tight clearance spaces
- Equipped with two standard G1/4-inch threaded ports
- Features durable steel side panels and brass port threads
Cons
- Provides only two connection ports with no dedicated drain port
- Limited to a single 120mm fan mounting area
Good fit if
- You need a slim 30mm radiator for a tight case layout.
- You want an all-copper core paired with brass G1/4-inch threads.
- You are building a custom loop with a single 120mm fan mount.
Skip if
- You need more than two connection ports for flexible tubing routes.
- You have space for thicker 45mm or 60mm radiator alternatives.
Verdict: Alphacool NexXxos ST30 120mm Copper Radiator provides dependable heat exchange in tight spaces using an all-copper channel and fin design. Its 30mm profile and dual G1/4-inch ports deliver a practical, standard-fit solution for single-fan loop segments.
Alphacool NexXxoS Monsta 120mm Radiator
Best for: deep-clearance custom liquid cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Dimensions
- 8.66 × 5.51 × 3.54 inches
- Weight
- 2.55 pounds
The Alphacool NexXxoS Monsta 120mm Radiator is a standalone heat exchanger designed for custom liquid cooling loops. It measures 8.66 inches long, 5.51 inches wide, and features a thick 3.54-inch profile weighing 2.55 pounds. This oversized 120mm radiator suits your build if you have ample internal chassis clearance and want maximum heat dissipation surface area in a single-fan form factor without moving up to larger multi-fan mounting locations.
Pros
- Substantial 3.54-inch thickness provides high internal volume
- Standard 120mm fan form factor fitment
- Sturdy construction weighing 2.55 pounds
- Available across seven size variations up to 560mm
Cons
- Total thickness of 3.54 inches requires significant chassis clearance before adding fans
- Heavier 2.55-pound bare weight demands secure mounting points
- Requires separate purchase of fans, pump, and tubing
Good fit if
- You have deep clearance in your case to fit a 3.54-inch thick radiator body.
- You need high physical volume inside a single 120mm fan mount location.
- You are assembling a custom loop and already have compatible G1/4 fittings and fans.
Skip if
- You want a complete pre-filled all-in-one liquid cooler with included pump and fans.
- You have a compact chassis with limited motherboard or clearance margin.
Verdict: Alphacool NexXxoS Monsta 120mm Radiator provides an exceptionally thick 3.54-inch heat exchanger core for single-fan mounting locations. It suits custom loop builders who have ample depth in their PC cases and need high cooling capacity in a compact footprint.
Alphacool NexXxos XT45 120mm X-Flow Radiator
Best for: thick 120mm custom loops needing routing flexibility
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 4.88 × 6.77 × 1.77 inches
- Weight
- 1.15 pounds
View on Amazon: Alphacool NexXxos XT45 120mm X-Flow Radiator
This 120mm single-fan radiator gives you a 45mm-thick core with copper fins, channels, and chambers paired with brass threads and steel side panels. The X-Flow layout features six G1/4-inch ports across both ends for flexible tubing runs. At 172mm long and 522g, it suits custom loop builders needing a thicker 120mm copper heat exchanger with multiple inlet and outlet options in compact cases.
Pros
- Copper channels, fins, and chambers with brass threads
- Six G1/4-inch ports provide multiple connection points
- 45mm thickness offers higher coolant capacity than standard 30mm designs
Cons
- 45mm thickness requires more clearance than slim 25mm or 30mm models
- 172mm overall length exceeds typical 120mm frame dimensions due to dual end tanks
Good fit if
- You need versatile port options across both ends to simplify custom tubing runs.
- You have space for a 45mm radiator thickness plus fan depth.
- You want an all-copper cooling core with brass port threads.
Skip if
- You need a slim sub-30mm radiator for tight form-factor clearance.
- You have a case opening restricted strictly to 120mm lengthwise.
Verdict: Alphacool NexXxos XT45 X-Flow 120mm Radiator delivers solid thermal volume and routing versatility via its 45mm copper core and six G1/4-inch ports. It serves as a dependable choice when you have the 172mm lengthwise space to accommodate it.
Alphacool NexXxos ST30 X-Flow 120mm Radiator
Best for: compact custom loops needing straight-through routing
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 4.88 × 6.77 × 1.18 inches
- Weight
- 12.4 ounces
View on Amazon: Alphacool NexXxos ST30 X-Flow 120mm Radiator
This is a 120mm single-fan radiator with a 30mm thickness and an X-Flow configuration. It features copper cooling channels, copper fins, and copper chambers, paired with steel side panels and brass threads. With four G1/4-inch ports and a weight of 352g, it gives you versatile connection points. It suits you if you need a slim, full-copper radiator for streamlined loop routing.
Pros
- Copper construction across fins, channels, and chambers
- Four G1/4-inch threaded ports for versatile routing
- Slim 30mm profile fits tight spaces
- Lightweight build at 352g
Cons
- Total length of 172mm requires extra end clearance
- Does not include integrated pump or tubing
- No fans included in specifications
Good fit if
- You need an X-Flow configuration with four G1/4-inch ports.
- You want full copper channels, fins, and chambers in a 30mm profile.
- You have at least 172mm of mounting clearance for a 120mm fan radiator.
Skip if
- You prefer an all-in-one pre-assembled liquid cooler.
- You lack clearance for the extended 172mm total length.
Verdict: Alphacool NexXxos ST30 X-Flow 120mm Radiator delivers solid thermal materials with full copper internals and four G1/4-inch ports. Its 30mm thickness and straight-through flow design make it an effective single-fan option for compact custom loops.
DIYhz 120mm 12-Pipe Aluminum Radiator
Best for: slim, fanless custom aluminum cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Dimensions
- 6.1 × 4.72 × 1.06 inches
- Weight
- 7.83 ounces
This DIYhz unit is a standalone 120mm aluminum radiator designed for liquid cooling loops. It measures 155 by 120 by 27 millimeters, weighs 222 grams, and features 12 internal tubes with aluminum cooling fins treated in black oxidation paint. You will need to supply your own 120mm fan. It suits you if you build a compact custom loop for a CPU or VGA component on a tight footprint.
Pros
- Slim 27mm thickness fits tight case spaces
- Lightweight aluminum build weighing 222 grams
- 12-tube heat exchanger core with black oxidation finish
- Standard 120mm fan mounting dimensions
Cons
- Does not include a cooling fan
- Aluminum construction rather than copper
Good fit if
- You need a slim 27mm radiator for compact enclosures.
- You already have your own 120mm fan.
- You build an aluminum-compatible liquid cooling loop.
Skip if
- You need a complete kit with fans included.
- You run a copper-only loop setup.
Verdict: DIYhz 120mm 12-Pipe Aluminum Radiator provides a lightweight, 27mm-thick heat exchanger for custom cooling loops. It delivers core 12-tube cooling functionality for builders supplying their own fans.
Alphacool NexXxoS ST25 Copper 120mm Radiator
Best for: compact custom loops needing slim copper radiators
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 3.15 × 3.15 × 3.94 inches
View on Amazon: Alphacool NexXxoS ST25 Copper 120mm Radiator
The Alphacool NexXxoS ST25 is a 120mm liquid cooling radiator built with solid copper construction and a slim 25.5 mm profile. It features 15 fins per inch alongside two standard G1/4-inch threaded ports for liquid loop connections. Measuring 151 x 120 x 25.5 mm, this compact radiator is designed for single 120mm fan setups. It suits you if you need reliable copper heat dissipation inside compact PC cases with tight clearance.
Pros
- Solid copper construction
- Slim 25.5 mm profile for tight clearance
- 15 fins per inch density
- Standard 2x G1/4" port connections
Cons
- Provides only two G1/4" connection ports
- Single 120mm fan mount limits total surface area
Good fit if
- You need a slim 25.5 mm copper radiator for a compact case.
- You use standard G1/4" fittings in your custom liquid loop.
Skip if
- You need multiple port configurations beyond two G1/4" threads.
- You have space for thicker radiators or multi-fan setups like 240mm or 360mm.
Verdict: Alphacool NexXxoS ST25 Copper 120mm Radiator delivers solid copper construction in a low-profile 25.5 mm frame. It provides a compact 15 FPI heat dissipation option for space-constrained single-fan builds.
EK EK-Loop 120mm Pump Reservoir Bracket
Best for: mounting pumps to 120mm fan locations
- Size
- 120Mm (what this guide is about)
- Dimensions
- 5.91 × 82.7 × 5.91 inches
- Weight
- 1.76 ounces
This is a mounting bracket for pumps and combo reservoirs, not a standalone cooler. It secures hardware directly to any standard 120mm fan mount pattern. Built from 1.5mm press-bent painted steel, the unit measures 11.5mm in height and supports horizontal or vertical orientations. You will find it useful if you are assembling a custom loop and need to anchor your pump unit inside a compact chassis onto an existing 120mm frame.
Pros
- Compatible with standard 120mm fan mounting hole patterns
- Supports both horizontal and vertical mounting orientations
- Constructed from 1.5mm press-bent painted steel
- Low-profile 11.5mm bracket height
Cons
- Functions only as a bracket without integrated cooling components
- Requires separate pump, reservoir, and mounting hardware
Good fit if
- You need to mount a standalone pump or reservoir unit to a 120mm fan slot.
- You require flexible horizontal or vertical placement inside your chassis.
Skip if
- You want an all-in-one liquid cooler that includes a radiator and block.
- You do not have an open 120mm fan mounting location.
Verdict: EK EK-Loop 120mm Pump Reservoir Bracket provides a 1.5mm steel base for anchoring pump units horizontally or vertically. It attaches directly to standard 120mm fan hole patterns in custom liquid cooling setups.
Clyxgs 120mm Aluminum Radiator with Fan
Best for: all-aluminum 120mm custom cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Dimensions
- 6.1 × 4.72 × 1.46 inches
- Weight
- 10.6 ounces
This 120mm liquid cooling radiator features a 12-pipe aluminum core with pure aluminum fins and black oxidation paint. It measures 6.1 by 4.72 inches with a total assembled height up to 2.28 inches including its bundled 12V high-speed fan. Weighing 0.66 pounds, it provides basic heat exchange for PC CPUs, VGA units, or industrial hardware. You get a functional single-fan aluminum setup designed for standard 120mm mounting.
Pros
- Bundled 12V high-speed cooling fan included
- 12-pipe pure aluminum fin design
- Black oxidation paint finish
- Lightweight build at roughly 0.66 pounds
Cons
- Aluminum construction limits compatibility with copper loops
- No RGB lighting or control software support listed
Good fit if
- You need a 120mm aluminum radiator that includes a matching 12V fan.
- You build an all-aluminum liquid cooling loop for a CPU or VGA component.
Skip if
- You run copper water blocks or copper fittings in your cooling loop.
- You need integrated RGB lighting or motherboard sync.
Verdict: Clyxgs 120mm Aluminum Radiator with Fan delivers a straightforward 12-pipe aluminum heat exchanger paired directly with a 12V fan. It handles basic 120mm liquid cooling loops where copper compatibility is not required.
CLYXGS 120mm Aluminum Water Cooling Radiator
Best for: compact aluminum custom liquid cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Dimensions
- 4.7 × 1.06 × 6.1 inches
View on Amazon: CLYXGS 120mm Aluminum Water Cooling Radiator
This Clyxgs unit is a standalone 120mm aluminum liquid cooling radiator designed for custom PC loops. It features 12 flat cooling tubes, standard G1/4 inch threaded ports, and a slim 27 mm profile measuring 155 by 120 millimeters. Black oxidation paint coats the pure aluminum fins. It suits you if you need a compact single-fan heat exchanger for CPU or VGA cooling in tight chassis spaces.
Pros
- Standard G1/4 inch threaded fitting ports
- Slim 27 mm thickness for tight clearances
- 12-tube pure aluminum heat exchanger core
- Mounts standard 120x120 mm cooling fans
Cons
- Aluminum construction restricts pairing with copper loop components
- Radiator only without included fan, pump, or tubing
Good fit if
- You need a slim 27 mm radiator that fits a 120x120 mm fan space.
- You build an aluminum-compatible liquid cooling loop with standard G1/4 fittings.
- You want a 12-tube heat exchanger for a compact PC CPU or VGA loop.
Skip if
- You use copper water blocks or copper fittings in your existing loop.
- You need a pre-assembled all-in-one cooler with an integrated pump and tubing.
Verdict: CLYXGS 120mm Aluminum Water Cooling Radiator provides a compact 27 mm aluminum frame with 12 tubes and standard G1/4 ports for custom liquid loops. It serves space-constrained builds well whenever you assemble your own compatible aluminum parts.
greenDracaena 120mm Copper Radiator
Best for: compact custom loops in SFF cases
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 6.05 × 4.76 × 1.1 inches
- Weight
- 13.6 ounces
This is a standalone 120mm copper radiator designed for custom liquid cooling loops in compact setups. It measures 29mm thick and features 14 micro-channels paired with brass headers and copper fins for effective heat transfer. You get standard dual G1/4 threaded ports that accept common loop fittings. It suits you if you need a slim heat exchanger for low-to-mid TDP processors inside small form factor or Mini-ITX computer cases.
Pros
- Copper fins and tubes paired with brass headers
- Slim 29mm thickness fits tight clearances
- Standard dual G1/4 BSP threaded ports
- 14 micro-channels for coolant flow
Cons
- Cooling fan is not included
- Limited to low-to-mid TDP thermal loads
- Accommodates only a single 120mm fan
Good fit if
- You are assembling a custom loop inside a small form factor or Mini-ITX enclosure.
- You need a slim 29mm copper radiator that uses standard G1/4 fittings.
- You are cooling a low-to-mid TDP processor with a single 120mm fan mount.
Skip if
- You need a complete all-in-one cooler with an integrated pump and tubing.
- You expect a cooling fan to come in the box.
- You are cooling high-TDP hardware that requires multi-fan radiator space.
Verdict: greenDracaena 120mm Copper Radiator provides a compact 29mm brass-and-copper core with standard G1/4 threading for custom Mini-ITX loops. It works best for modest-wattage processors where tight clearance limits you to a single 120mm fan mount.
Alphacool NexXxoS ST20 HPE Full Copper 120mm Radiator
Best for: all-copper compact custom liquid cooling loops
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
View on Amazon: Alphacool NexXxoS ST20 HPE Full Copper 120mm Radiator
This 120mm standalone radiator provides pure copper construction across both cooling fins and water-carrying channels. Finished in black, it brings the thermal properties of copper to compact single-fan locations inside your custom cooling loop. If you need a 120mm heat exchanger designed without aluminum parts touching your coolant, this unit fits your build. You supply your own 120mm fan, fittings, pump, and liquid.
Pros
- Pure copper cooling fins and water-carrying channels
- Compact 120mm single-fan form factor
- Black finish matches standard case interiors
Cons
- Cooling fan not included in specifications
- Port count and fitting thread sizes not listed
Good fit if
- You need a 120mm pure copper radiator for your custom loop.
- You want cooling fins made entirely from copper rather than aluminum.
Skip if
- You need a complete all-in-one cooler with integrated pump and tubing.
- You want a package that comes with pre-bundled cooling fans.
Verdict: Alphacool NexXxoS ST20 HPE Full Copper 120mm Radiator provides an all-copper build for single-fan mounting locations. It delivers reliable thermal conductivity when you want to avoid mixed metals in your loop.
Thermaltake TH120 ARGB Snow Edition 120mm
Best for: compact white AMD AM5 builds
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Socket Compatibility
- Intel LGA1700 Ready/AMD AM5
- Lighting Type
- ARGB
- Dimensions
- 10.5 × 8.47 × 5.39 inches
- Weight
- 1.65 pounds
This is a white 120mm all-in-one liquid cooler designed for compact builds. It features a copper base plate, a low-profile pump, and an addressable RGB fan and water block ring. The included hardware supports AMD AM5 alongside Intel LGA 1700 and legacy sockets. You can control lighting via 5V motherboard headers or the included hardware controller. It suits you if you want a self-contained white cooler for an AM5 setup.
Pros
- Native support for AMD AM5 and Intel LGA 1700 sockets
- Copper base plate for thermal conductivity
- Includes hardware ARGB controller with 7 modes and 8 presets
- Low-profile pump housing
Cons
- Single 120mm radiator provides less heat dissipation area than larger sizes
- Motherboard lighting sync requires a 5V addressable header
Good fit if
- You need native mounting hardware for an AMD AM5 socket.
- You are assembling an all-white build with space for a single 120mm radiator.
- You want manual push-button RGB controls without using motherboard software.
Skip if
- You have chassis clearance for larger 240mm or 360mm radiators.
- You want an all-black cooling setup without illumination.
Verdict: Thermaltake TH120 ARGB Snow Edition 120mm delivers AMD AM5 compatibility and integrated ARGB lighting in an all-white, single-fan package. It provides a compact liquid cooling solution with both motherboard sync and manual lighting controls.
Barrow Dabel-a White 120mm Copper Radiator
Best for: white custom loops needing compact 120mm cooling
- Size
- 120Mm (what this guide is about)
- Radiator Size
- 120mm
- Material
- Copper
- Dimensions
- 3.94 × 1.97 × 0.5 inches
This Barrow Dabel-a unit is a 120mm DIY liquid cooling radiator built with high-density red copper fins and a white finish. It features standard G1/4-inch thread ports for broad loop compatibility and measures 28mm thick. If you need a compact copper heat exchanger that matches a white chassis build, this radiator fits standard single-fan mounts while supporting high-flow multi-channel circulation.
Pros
- High-density red copper fins
- Standard G1/4-inch port interface
- Slim 28mm profile thickness
- Multi-channel high-flow circulation
Cons
- Requires separate purchase of fans, pump, and fittings
- Limited cooling surface compared to 240mm or larger variants
Good fit if
- You are building a custom loop with standard G1/4-inch fittings.
- You want a compact 28mm thick copper radiator with a white housing.
Skip if
- You want a complete pre-assembled all-in-one liquid cooler.
- You have space and thermal requirements for a 240mm or larger radiator.
Verdict: Barrow Dabel-a White 120mm Copper Radiator offers solid red copper construction and a slim 28mm profile for G1/4-based custom cooling loops.
Specifications side by side
| Spec | Alphacool NexXxoS XT45 120mm Copper Radiator | Alphacool NexXxos UT60 120mm Copper Radiator | Alphacool NexXxos ST30 120mm Copper Radiator | Alphacool NexXxoS Monsta 120mm Radiator | Alphacool NexXxos XT45 120mm X-Flow Radiator | Alphacool NexXxos ST30 X-Flow 120mm Radiator | DIYhz 120mm 12-Pipe Aluminum Radiator | Alphacool NexXxoS ST25 Copper 120mm Radiator | EK EK-Loop 120mm Pump Reservoir Bracket | Clyxgs 120mm Aluminum Radiator with Fan | CLYXGS 120mm Aluminum Water Cooling Radiator | greenDracaena 120mm Copper Radiator | Alphacool NexXxoS ST20 HPE Full Copper 120mm Radiator | Thermaltake TH120 ARGB Snow Edition 120mm | Barrow Dabel-a White 120mm Copper Radiator |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Radiator Size | 120mm | 120mm | 120mm | 120mm | 120mm | 120mm | 120mm | 120mm | not specified | 120mm | 120mm | 120mm | 120mm | 120mm | 120mm |
| Socket Compatibility | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Intel LGA1700 Ready/AMD AM5 | not specified |
| Lighting Type | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | ARGB | not specified |
| Lighting | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | ARGB | not specified |
| Material | Copper | Copper | Copper | not specified | Copper | Copper | not specified | Copper | not specified | not specified | not specified | Copper | Copper | not specified | Copper |
| Size | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm | 120Mm |
| Dimensions | 4.88 × 6.18 × 1.81 inches | 4.72 × 4.72 × 2.76 inches | 6.18 × 4.88 × 1.18 inches | 8.66 × 5.51 × 3.54 inches | 4.88 × 6.77 × 1.77 inches | 4.88 × 6.77 × 1.18 inches | 6.1 × 4.72 × 1.06 inches | 3.15 × 3.15 × 3.94 inches | 5.91 × 82.7 × 5.91 inches | 6.1 × 4.72 × 1.46 inches | 4.7 × 1.06 × 6.1 inches | 6.05 × 4.76 × 1.1 inches | not specified | 10.5 × 8.47 × 5.39 inches | 3.94 × 1.97 × 0.5 inches |
| Weight | 1.32 pounds | 1.76 pounds | 0.47 kilograms | 2.55 pounds | 1.15 pounds | 12.4 ounces | 7.83 ounces | not specified | 1.76 ounces | 10.6 ounces | not specified | 13.6 ounces | not specified | 1.65 pounds | not specified |
| Model | 14163 | 14172 | 14156 | 14180 | 1011660 | 1011656 | 10424 | 14352 | 3831109824689 | 1182 | 1185 | Osprey-Radiator-120 | 14435 | CL-W346-PL12SW-A | Dabel-28a120 |
| Color | not specified | not specified | not specified | not specified | not specified | Black | black-120mm | Black | not specified | Black | Black | Black (29mm) | Black | White | not specified |
Is a 120mm Size Worth It?
A 120mm radiator or bracket mounts directly to a single standard 120mm fan location in your chassis. This single-fan footprint allows liquid cooling components to fit inside space-constrained cases where multi-fan slots are absent. Radiator thickness within this form factor ranges from low-profile 25.5mm frames up to deep 3.54-inch heat exchangers. Choosing 120mm equipment lets you install dedicated liquid cooling loops or anchor pump-reservoir combos without dedicating space to larger multi-fan setups.
Worth it if
- You have only a single 120mm fan mount available in your PC chassis.
- You need to anchor a pump unit directly to a standard 120mm fan hole pattern.
- You are building a compact loop inside a space-constrained case.
Skip it if
- You have chassis space available for dual-fan or triple-fan radiators.
- You lack the depth clearance required for thicker 60mm or 3.54-inch radiator frames.
How We Picked 120mm Coolers
You will find 15 liquid cooling products selected for matching the 120mm size specification. A product qualifies when its listing confirms this size in the title or published feature list. Only one variant from each product family is included on the list. All details come directly from specifications published on the listings, and products are not physically handled.
On this page, you see products in stock first. The guide reviews verified dimensions, core materials such as copper or aluminum, and port counts to outline each unit for your build. These practical measurements help you determine proper case clearance and loop compatibility before you assemble your system.
How to Choose a 120mm Cooler
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Check CPU Socket Compatibility
Verify your motherboard socket type before you select your hardware. Complete cooling units specify exact processor platform compatibility on their spec sheets. For example, the Thermaltake TH120 ARGB Snow Edition supports AMD AM5 and Intel LGA 1700 sockets out of the box. Standalone 120mm radiators do not ship with CPU retention brackets because they serve as modular fluid heat exchangers. If you use a standalone radiator, you must source a separate CPU water block that matches your socket.
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Measure Chassis Clearance Depth
Measure your case clearance before you choose a radiator thickness. Radiator core thickness dictates how much internal depth your chassis requires. The Alphacool NexXxoS Monsta 120mm Radiator features an exceptionally thick 3.54-inch core that demands deep-clearance mounting positions. Standard cases often cannot fit such deep profiles once you attach cooling fans. If you build inside a compact case, look for low-profile frames measuring between 25mm and 30mm thick to ensure your setup clears memory modules and internal motherboard components.
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Evaluate Port Counts and Flow
Look at the port quantity and fluid pathway layout on each heat exchanger. Standard dual-port radiators place inlets and outlets on the same end tank. Crossflow designs change tube routing across your case. For example, the Alphacool NexXxos ST30 X-Flow 120mm Radiator features four G1/4-inch ports and a straight-through flow design. This configuration places ports at opposing ends. Choosing an X-Flow model simplifies straight tubing runs, but you must ensure your chassis length accommodates the extended frame dimension.
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Review Included Fan Hardware
Determine whether you need bundled fans or prefer selecting your own models. Some liquid cooling packages provide an integrated fan, while standalone radiators require you to supply them separately. The Clyxgs 120mm Aluminum Radiator with Fan includes a 12V fan paired directly to a 12-pipe heat exchanger. This saves you from sourcing a separate 120mm blower. If you choose a bare radiator frame instead, verify your existing fans match the standard 120mm mounting hole pattern and provide appropriate airflow.
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Check Component Mounting Brackets
Examine whether your build requires dedicated mounting brackets for liquid cooling components. In custom setups, standard 120mm fan locations can support hardware beyond basic radiators. The EK EK-Loop 120mm Pump Reservoir Bracket uses a 1.5mm steel base to anchor pump units horizontally or vertically directly onto 120mm fan mounts. If your case lacks flat floor space or drive cages to mount a pump reservoir combo, picking a 120mm bracket lets you secure critical fluid components directly onto open fan slots.
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Inspect Fin Density Ratings
Check the fins per inch specification when comparing radiator frames. Fin density dictates how easily air passes through the cooling core. For instance, the Alphacool NexXxoS ST25 Copper 120mm Radiator features a 15 FPI heat dissipation design. Higher fin counts offer more surface area for thermal transfer but require higher static pressure to push air across the channels. If you plan to operate low-speed or silent fans, select radiators with moderate fin densities that do not choke airflow in restrictive enclosures.
Frequently asked questions
What is the difference between standard and X-Flow 120mm radiators?
Standard radiators place inlet and outlet ports on the same end chamber, whereas X-Flow models route fluid from one end straight across to the opposite end. For instance, the Alphacool NexXxos ST30 X-Flow features ports at both ends across its 6.77-inch frame. This straight-through design simplifies tube routing in specific chassis layouts compared to traditional U-flow configurations.
Does a 120mm liquid cooler include fans in the package?
Not all 120mm liquid cooling products include fans. Some models, such as the Clyxgs 120mm Aluminum Radiator, package a 12V cooling fan directly with the core. In contrast, custom loop standalone radiators like the DIYhz 12-Pipe Aluminum Radiator or Alphacool NexXxoS series require you to source and install your own 120mm cooling fans separately. Always check the published product specifications before purchasing.
How thick are 120mm radiators for PC cooling?
Radiator thickness varies widely depending on the model and cooling objective. Low-profile models like the Alphacool NexXxoS ST25 measure 25.5 millimeters thick, while standard radiators such as the greenDracaena run 29 millimeters. Extreme cooling models like the Alphacool NexXxoS Monsta expand significantly to a 3.54-inch depth. You must verify case clearance to ensure adequate space for both the radiator and attached fans.
Can you mount a pump directly onto a 120mm radiator mount?
Yes, you can secure liquid cooling pumps to standard 120mm fan positions using dedicated adapter hardware. For example, the EK EK-Loop 120mm Pump Reservoir Bracket uses a 1.5mm steel frame that anchors to 120mm hole patterns. This allows you to position a standalone pump or reservoir unit either vertically or horizontally when dedicated mounting brackets are absent in your computer chassis.
What port thread size is standard on 120mm radiators?
The standard connection thread used on custom 120mm liquid cooling components is G1/4 inch. Units like the Barrow Dabel-a White and CLYXGS Aluminum Radiator utilize standard G1/4 threaded ports to connect fittings and tubing. Other designs, including the Alphacool NexXxoS XT45, feature up to six individual G1/4 ports, giving you several alternate inlet, outlet, and drain locations for custom loop routing.
What fin density should you expect on slim 120mm radiators?
Slim radiators often utilize balanced fin densities to maximize surface area within restricted dimensions. For example, the Alphacool NexXxoS ST25 Copper Radiator specifies a fin density of 15 FPI, or fins per inch, housed in its 25.5mm frame. This specification determines how tightly the copper fins pack together, which dictates the level of static air pressure required from your attached 120mm fan.
Do 120mm liquid coolers support both Intel and AMD processors?
Complete all-in-one liquid coolers typically list explicit compatibility for both platforms. As an example, the Thermaltake TH120 ARGB Snow Edition includes mounting hardware for both AMD AM5 and Intel LGA 1700 sockets out of the box. Standalone radiators, however, lack CPU blocks entirely, meaning platform compatibility depends on the separate water block you select for your custom liquid loop.