Noctua 240mm AIO AM5 LGA1851 vs Noctua 360mm AIO AM5 LGA1851 (2026): Key Differences
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The noctua 240mm aio am5 lga1851 vs 360mm aio am5 lga1851 comparison helps you choose the right size for your build. Both units share the same Asetek Emma V2 platform, SecuFirm2 mounting for AM5 and LGA1851, and NF-A12x25 G2 fans. They also include NT-H2 paste and the same pump noise absorber. The main difference is the radiator size. You get two fans with the 240mm model and three fans with the 360mm model. This changes the cooling surface area and physical footprint significantly.
Key differences
| Aspect | Noctua 240mm AIO for AM5 and LGA1851 | Noctua 360mm AIO for AM5 and LGA1851 |
|---|---|---|
| Radiator Size | 240mm | 360mm |
| Included Fans | Two NF-A12x25 G2 PWM 120mm fans | Three NF-A12x25 G2 PWM 120mm fans |
| Model Number | NL-LC1-24 | NL-LC1-36 |
| Weight | 3.55 pounds | 4.37 pounds |
| Radiator Dimensions (L x W x H) | 11 x 4.72 x 2.32 inches | 6.2 x 1.86 x 0.91 inches |
Which one should you choose?
Choose Noctua 240mm AIO for AM5 and LGA1851 if
- You are building a small form factor PC with limited radiator space.
- You prefer a cooler that weighs less and has a larger physical footprint for easier fitting in tight cases.
- You want a near-silent setup that uses fewer fans.
Choose Noctua 360mm AIO for AM5 and LGA1851 if
- You need maximum cooling capacity for high-end processors like the Ryzen 9950X3D.
- You have a full-tower or mid-tower case with room for a 360mm radiator.
- You want the extra fan for additional airflow options or redundancy.
Verdict: The 240mm model is the practical choice for compact builds where space is at a premium. The 360mm model offers more cooling surface area for users with larger cases and higher thermal demands. Both provide the same premium platform and mounting system, so your case size should drive the decision.
240mm vs 360mm Noctua AM5 AIO
Radiator size
The primary difference is the radiator dimensions. The Noctua 240mm AIO uses a 240mm radiator, while the Noctua 360mm AIO features a larger 360mm unit. A larger radiator provides more surface area for heat dissipation. This allows the 360mm model to move more thermal energy away from the CPU block. The 240mm unit is designed for compact builds where space is limited. You should choose the 360mm if you have the case room for a larger cooler. The extra surface area generally supports higher sustained loads better than the smaller 240mm variant.
Fan count
The number of included fans differs between the two models. The Noctua 240mm AIO comes with two NF-A12x25 G2 PWM fans. The Noctua 360mm AIO includes three of the same fans. Each fan contributes to the total airflow across the radiator. More fans mean more air moving through the fins. This helps maintain lower temperatures under heavy workloads. If you need maximum cooling potential, the three-fan setup offers a clear advantage. The two-fan setup is sufficient for smaller cases or lower power CPUs.
Overall weight
Weight is a factor for motherboard socket stress. The Noctua 240mm AIO weighs 3.55 pounds. The Noctua 360mm AIO is heavier at 4.37 pounds. The additional weight comes from the larger radiator and extra fan. Heavier coolers can put more strain on the CPU socket over time. This is particularly relevant for the AM5 and LGA1851 sockets. The lighter 240mm unit reduces this risk slightly. You should ensure your motherboard has adequate support for the heavier 360mm model.
Physical dimensions
The physical footprint varies significantly. The 240mm model is 11 inches long, 4.72 inches wide, and 2.32 inches high. The 360mm model is 6.2 inches long, 1.86 inches wide, and 0.91 inches high. These measurements affect case compatibility. The 240mm unit is longer but wider and taller. The 360mm unit is shorter but narrower and thinner. You must check your case specifications for clearance. The different dimensions mean they fit different types of chassis layouts. Verify your case supports the specific orientation you plan to use.
Socket compatibility
Both coolers support the same modern sockets. The Noctua 240mm AIO is compatible with AMD AM5 and Intel LGA1851. The Noctua 360mm AIO also supports AMD AM5 and Intel LGA1851. Both use the SecuFirm2 mounting system with offset options. This allows for hotspot optimization on these platforms. Neither unit has an advantage here as they share identical socket support. You can install either cooler on your AM5 or LGA1851 motherboard without compatibility issues. The mounting hardware is the same for both models.
Choose Your Noctua AIO Size
SFF builders needing compact fit
The 240mm model measures 11 inches long, 4.72 inches wide, and 2.32 inches high. This compact footprint fits Small Form Factor cases better than the larger alternative. It uses two NF-A12x25 G2 fans for efficient cooling in tight spaces while maintaining low noise levels through acoustic optimization.
High-end gaming workstation users
The 360mm version features a larger radiator with three NF-A12x25 G2 fans. This extra surface area provides superior heat dissipation for demanding workloads. The design targets near-silent gaming PCs or workstations, ensuring cutting-edge efficiency at low noise levels while handling higher thermal loads effectively.
Users prioritizing minimal weight
Weighing 3.55 pounds, this unit is lighter than the 360mm option at 4.37 pounds. The reduced mass is beneficial for motherboards with weaker socket retention or for builds where overall system weight is a concern. It still delivers high performance using the same reliable Asetek platform.
Those needing maximum cooling area
This model offers the largest radiator surface area available in this comparison. The increased dimensions allow for more effective heat transfer from the liquid to the air. If your case supports a 360mm mount, this size ensures the best possible thermal performance for high-end AM5 or LGA1851 processors.
The products compared
Noctua 240mm AIO for AM5 and LGA1851
Best for: Compact AM5 and LGA1851 builds
- Radiator Size
- 240mm
- Socket Compatibility
- AMD AM5, Intel LGA1851
- Dimensions
- 11 × 4.72 × 2.32 inches
- Weight
- 3.55 pounds
View on Amazon: Noctua 240mm AIO for AM5 and LGA1851 Affiliate link
This Noctua 240mm AIO uses the Asetek Emma V2 platform for reliable cooling. It includes two NF-A12x25 G2 fans for efficient, low-noise operation. The SecuFirm2 mounting system supports AMD AM5 and Intel LGA1851 sockets. Its compact 240mm radiator is ideal for small form factor builds. You get included NT-H2 paste and an AM5 thermal guard.
Pros
- Asetek Emma V2 closed-loop platform for reliability
- NF-A12x25 G2 fans with speed-offset for noise control
- SecuFirm2 mounting with offset options for AM5 and LGA1851
- Compact 240mm radiator size for SFF cases
Cons
- Smaller 240mm radiator limits heat dissipation compared to 360mm models
- Heavier at 3.55 pounds than typical 240mm coolers
- Auxiliary cooling fan sold separately
Good fit if
- You need a cooler for a small form factor PC case
- You are building with an AMD AM5 or Intel LGA1851 processor
- You prioritize low noise and compact dimensions
Skip if
- You require maximum thermal headroom for extreme overclocking
- You prefer a larger 360mm radiator for better cooling capacity
- You want an auxiliary fan included in the box
Verdict: Noctua 240mm AIO AM5 LGA1851 fits users who need reliable cooling in a compact form factor. It is a solid choice for AM5 and LGA1851 builds where space is limited.
Noctua 360mm AIO for AM5 and LGA1851
Best for: High-performance AM5 and LGA1851 builds
- Radiator Size
- 360mm
- Socket Compatibility
- AMD AM5, Intel LGA1851
- Dimensions
- 6.2 × 1.86 × 0.91 inches
- Weight
- 4.37 pounds
View on Amazon: Noctua 360mm AIO for AM5 and LGA1851 Affiliate link
This Noctua NL-LC1-36 is a 360mm AIO designed for AMD AM5 and Intel LGA1851 sockets. It uses an Asetek Emma V2 platform and three NF-A12x25 G2 fans for high efficiency. The SecuFirm2 mounting system allows offset installation for hotspot optimization. It weighs 4.37 pounds and includes NT-H2 paste. This cooler suits users needing maximum cooling capacity for high-end processors.
Pros
- 360mm radiator size for superior heat dissipation
- SecuFirm2 mounting system with offset options for AM5 and LGA1851
- Three NF-A12x25 G2 fans with speed-offset for acoustic optimization
- Pump noise absorber with tuned-mass damper for quieter operation
Cons
- Heavier build at 4.37 pounds compared to 240mm alternatives
- Auxiliary cooling fan NL-ACF1 is sold separately
- Larger radiator may not fit in smaller cases
Good fit if
- You need maximum cooling performance for high-TDP CPUs
- You have a case that supports 360mm radiators
- You want offset mounting for hotspot optimization on AM5
Skip if
- You are building in a compact case with limited radiator space
- You prefer a lighter cooler for easier installation
- You need an auxiliary fan included in the box
Verdict: Noctua 360mm AIO AM5 LGA1851 is the right choice if you prioritize thermal headroom and have the case space for a 360mm radiator. It delivers quiet, efficient cooling for demanding workloads.
Specifications side by side
| Spec | Noctua 240mm AIO for AM5 and LGA1851 | Noctua 360mm AIO for AM5 and LGA1851 |
|---|---|---|
| Radiator Size | 240mm | 360mm |
| Socket Compatibility | AMD AM5, Intel LGA1851 | AMD AM5, Intel LGA1851 |
| Dimensions | 11 × 4.72 × 2.32 inches | 6.2 × 1.86 × 0.91 inches |
| Weight | 3.55 pounds | 4.37 pounds |
| Model | NL-LC1-24 | NL-LC1-36 |
Frequently asked questions
Does the Noctua 240mm AIO fit AM5 and LGA1851 sockets?
Yes, it supports both. The unit includes the SecuFirm2 mounting system designed specifically for AM5 and LGA1851 processors. This ensures a secure and compatible fit for your CPU without requiring additional adapters or complex installation steps.
What is the weight difference between the 240mm and 360mm models?
The 360mm model is heavier. It weighs 4.37 pounds, while the 240mm unit weighs 3.55 pounds. The extra mass comes from the larger radiator and additional fan. You should ensure your case can support the additional weight of the 360mm version.
Are the fans the same on both Noctua AIOs?
Yes, both units use the same NF-A12x25 G2 fans. This ensures consistent airflow characteristics and noise profiles across both sizes. You get the same high-quality fan performance whether you choose the compact 240mm or the larger 360mm radiator.
How wide is the radiator on the 240mm Noctua AIO?
The 240mm radiator is 4.72 inches wide. This dimension is crucial for checking compatibility with your case. It is narrower than the 360mm model, which measures 1.86 inches wide but extends significantly in length to accommodate three fans.
Does the 360mm AIO include thermal paste?
Yes, it includes NT-H2 paste. Both the 240mm and 360mm models come with this thermal compound pre-applied or included. This saves you the step of purchasing separate paste and ensures optimal thermal contact between the cold plate and your CPU.
Which model is better for small form factor builds?
The 240mm model is better for small builds. It measures 11 inches in length, making it more compact. The 360mm unit is longer and wider, requiring more space. If you have limited room, the 240mm version fits more easily.
What platform do both Noctua AIOs use?
Both units use the Asetek Emma V2 platform. This shared technology ensures reliable pumping performance and leak prevention. You get the same core cooling engine in both the 240mm and 360mm versions, differing only in radiator size.
How tall is the 240mm Noctua AIO radiator?
The 240mm radiator is 2.32 inches tall. This height is important for clearance with RAM modules. The 360mm model is slightly shorter at 0.91 inches. Check your case specifications to ensure the radiator height does not interfere with other components.