Alphacool NexXxoS XT45 120mm Copper Review (2026): A Spec-Based Look
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This alphacool nexxxos xt45 full copper review focuses on the 120mm single-fan radiator designed for compact builds. The unit features a 157 x 124 x 46mm footprint, making it suitable for cases with limited space. Its core construction uses copper chambers and fins for efficient heat transfer. The exterior includes black steel side panels for durability. You get six G1/4" ports for flexible tubing routing. This model weighs 784g, providing a solid feel without excessive bulk. The design prioritizes material integrity and fitment in standard 120mm fan slots.
What stands out
- Copper chambers and fins for high thermal conductivity
- Six G1/4" ports for versatile plumbing options
- Compact 120mm size fits standard 157 x 124mm spaces
- Black steel side panels for structural rigidity
Who it fits
Good fit for
This radiator suits users with small form-factor cases who need reliable cooling in a 120mm slot. It is ideal for builders who prefer copper cores for their thermal properties. The six ports help those who want flexible tubing placement. If you have a compact chassis and need a single-fan solution, this model provides the necessary surface area. It fits well in systems where space is tight but performance matters.
Who should skip it
Skip this option if you need a thicker core for maximum heat dissipation. This model is only 46mm thick, which limits its capacity compared to 60mm or 90mm variants. If you plan to use a high-TDP CPU that requires a 240mm or larger radiator, this single-fan unit will not suffice. It is also not suitable if you prefer aluminum cores for lighter weight, as this unit weighs 784g due to its copper construction.
Verdict: The Alphacool NexXxoS XT45 120mm is a solid choice for compact builds needing a copper-core radiator. Its small footprint and multiple ports make it versatile for tight spaces.
Key specs explained
Radiator Size: 120mm
This dimension refers to the standard mounting width for single-fan configurations. You will need a case with a 120mm fan mounting point to install this unit. It fits in most mid-tower and compact cases. This size balances cooling surface area with physical space constraints. You should verify your case supports 120mm fans before purchasing. It is ideal for small form factor builds where larger radiators do not fit.
Dimensions: 157 x 124 x 46mm
These measurements define the physical footprint and thickness of the radiator. The 46mm thickness is standard for single-layer cores. You must check your case clearance to ensure this height fits between the fan and the radiator. The length and width determine the mounting hole pattern. Compact cases often have strict depth limits. Accurate measurement prevents installation conflicts with other components like RAM or drives.
Material: copper chambers, copper fins, copper channels
Copper offers high thermal conductivity, allowing heat to transfer quickly from the water to the fins. This material choice helps dissipate heat efficiently during high loads. Brass threads provide durable connections for your fittings. Steel side panels add structural rigidity. You benefit from reliable heat transfer without complex maintenance. Copper is a standard choice for performance-focused custom loops. It ensures consistent cooling across the entire surface area of the radiator.
G1/4" Ports (x6)
These are the standard thread size for most liquid cooling fittings in the enthusiast market. Six ports give you flexibility in tubing routing. You can connect multiple components or use redundant fittings for safety. This standard ensures compatibility with the majority of barbs and adapters available. You do not need special tools or rare parts for assembly. It simplifies the building process for custom loops. Check your fitting compatibility before starting your build.
Build Quality and Materials
The listing describes a full copper core. This means the chambers, fins, and channels are all copper. Copper conducts heat well, which helps transfer thermal energy from the coolant to the fins. The exterior uses steel side panels. This adds structural rigidity while keeping the overall mass manageable. The ports feature brass threads. This material choice ensures durability when you tighten fittings. You get six G1/4" ports. This layout offers flexibility for your tubing routes. You are not limited to just inlet and outlet connections.
According to the listing, the dimensions are 157 x 124 x 46mm. The black exterior finish is applied to these steel panels. This color helps the radiator blend into most dark-themed builds. The unit weighs 784 grams, or 1.32 pounds. This weight is moderate for a 120mm block. You need sturdy case mounts to support it. The single-fan design keeps the footprint small. This makes it suitable for cases with limited front or top space. The compact size does not sacrifice the full copper construction. You get efficient heat dissipation in a small form factor. The build prioritizes thermal performance and structural integrity over aesthetic extras.
Installation and Daily Operation
You mount this radiator using standard 120mm fan holes. The listing specifies a 157 by 124 by 46mm footprint. This compact size fits most mid-tower cases. You need a case with a 120mm fan mounting point. The unit weighs 784 grams. This weight is manageable for most mounting brackets. You connect tubing to the G1/4 inch ports. There are six ports available. This allows flexible routing in tight spaces. The ports use brass threads. You must ensure your fittings match this standard. The core uses copper chambers and fins. This material choice affects thermal performance. Copper transfers heat efficiently from the coolant to the fins. The exterior features steel side panels. These panels protect the copper core. They also provide structural rigidity. You fill the loop with coolant. The copper construction requires proper inhibitor levels. This prevents corrosion inside the chambers. Daily use involves continuous heat dissipation. The 120mm size limits total surface area. You should pair this with efficient fans. The steel panels do not contribute to cooling. They only protect the internal components. The design prioritizes durability over extreme airflow. You check for leaks after initial setup. The brass threads ensure a secure connection. This reduces the risk of dripping during operation. The compact dimensions make it ideal for small form factor builds. You have limited space but need reliable cooling. This radiator meets those requirements. The copper core ensures long-term stability. You do not need to worry about material degradation. The steel panels remain intact over time. This setup provides a solid foundation for your liquid cooling loop.
Before You Buy This Radiator
Before you buy this Alphacool NexXxoS XT45, verify your case supports 120mm fan mounts. The 157 x 124 x 46mm footprint requires precise clearance checks. You must purchase separate 120mm fans, as the listing includes only the radiator. Ensure your case has enough depth for the 46mm thickness plus fan height. The G1/4" ports allow standard fittings, but you need tubing and coolant. This copper core unit suits custom loops better than pre-filled AIOs. It offers a pure copper heat exchange surface. You will handle assembly and leak testing yourself. This approach provides better long-term maintenance access. The steel side panels add rigidity. Check your pump placement relative to the six port locations. This radiator fits well in compact builds where space is tight. It pairs with high-static pressure fans for optimal airflow through the dense fin stack. Consider your total loop volume when choosing this size. The 784-gram weight is manageable for most mounting brackets.
Check before you buy
- Confirm your case has a 120mm fan mounting point
- Check clearance for 46mm radiator plus fan height
- Buy separate 120mm fans and G1/4" fittings
- Verify tubing length fits your loop layout
- Ensure pump placement allows easy port access
The product at a glance
Alphacool NexXxoS XT45 120mm Copper Radiator
Best for: Single-fan builds needing full copper cooling
- Radiator Size
- 120mm
- Material
- Copper
- Thread Size
- G1/4
- Fan Mount
- Single Fan
- Dimensions
- 4.88 × 6.18 × 1.81 inches
- Weight
- 1.32 pounds
View on Amazon: Alphacool NexXxoS XT45 120mm Copper Radiator Affiliate link
This 120mm radiator uses a full copper core with brass threads and steel side panels. It measures 157 x 124 x 46mm and weighs 784g. The unit features six G1/4" ports for flexible tubing routing. You get a black exterior finish with a single fan mount. It suits builds needing reliable heat dissipation in a compact 120mm form factor.
Pros
- Full copper core and fins for efficient heat transfer
- Six G1/4" ports for versatile tubing connections
- Brass threads ensure durable fitting installation
- Compact 120mm size fits standard case mounts
Cons
- Steel side panels add weight without improving cooling
- Single fan configuration limits airflow options
- Heavier build at 784g may stress mounting points
Good fit if
- You need a compact 120mm radiator
- You prefer full copper core construction
- You want multiple G1/4" port options
Skip if
- You require a thicker radiator for better cooling
- You need a lighter weight for small cases
- You want a multi-fan mounting solution
Verdict: Alphacool NexXxoS XT45 120mm Full Copper offers a dense copper core in a standard 120mm frame. It fits users who prioritize core material over thickness for their single-fan setup.
Specifications side by side
| Spec | Alphacool NexXxoS XT45 120mm Copper Radiator |
|---|---|
| Radiator Size | 120mm |
| Material | Copper |
| Thread Size | G1/4 |
| Fan Mount | Single Fan |
| Size | 120Mm |
| Dimensions | 4.88 × 6.18 × 1.81 inches |
| Weight | 1.32 pounds |
| Color | Black |
| Model | 14163 |
Frequently asked questions
Is the Alphacool NexXxoS XT45 120mm radiator made entirely of copper?
Yes, the core construction uses copper chambers and fins. This design allows for efficient heat transfer from the coolant to the fins. The exterior side panels are made of steel, which provides structural support. You get a full copper core for the cooling elements.
What are the exact dimensions of the 120mm radiator?
The unit measures 157 by 124 by 46 millimeters. In inches, this is 4.88 inches in length, 6.18 inches in width, and 1.81 inches in height. These dimensions fit standard 120mm mounting points. You should verify your case has enough clearance for this footprint.
How much does the Alphacool NexXxoS XT45 weigh?
The radiator weighs 1.32 pounds, which equals 784 grams. This weight comes from the dense copper core and steel panels. It is a solid build that requires secure mounting. You do not need to worry about it feeling flimsy during installation.
Does this radiator come with fans included?
No, the listing includes only the radiator itself. You must purchase separate 120mm fans for operation. This is standard for this type of component. You can choose any fans that fit the 120mm standard and match your airflow needs.
Is the 120mm size suitable for compact cases?
Yes, the compact footprint makes it suitable for many mid-tower and small cases. The 157 by 124 by 46mm size fits standard 120mm fan mounts. You just need to ensure your case supports this specific thickness and length. It is a good choice for space-constrained builds.
What is the model number for this Alphacool radiator?
The model number is 14163. You can use this number to identify the exact product in listings or support documentation. It helps distinguish this specific 120mm copper version from other sizes or materials in the NexXxoS line.