Noctua NH-U12S Redux vs Noctua NH-D15 G2
Updated August 2026 — The Noctua NH-D15 G2 offers superior cooling performance and features, making it the better choice for high-end systems, while the NH-U12S Redux is a budget-friendly option for moderate needs.
The Noctua NH-D15 G2 offers superior cooling performance and features, making it the better choice for high-end systems, while the NH-U12S Redux is a budget-friendly option for moderate needs.
Why Noctua NH-U12S Redux is better
Price
NH-U12S Redux is significantly cheaper at C$62.95.
Size
Compact design fits in more cases.
Noise
Quieter operation at idle.
Why Noctua NH-D15 G2 is better
Cooling
Superior cooling performance with 8 heat pipes.
Surface Area
20% more surface area for heat dissipation.
Fan Quality
Includes advanced NF-A14x25r G2 fans.
Overall score
Specifications
| Spec | Noctua NH-U12S Redux | Noctua NH-D15 G2 |
|---|---|---|
| Brand | Noctua | Noctua |
| Current Price | C$62.95 | C$209.95 |
| Thermal Paste | NT-H1 | NT-H2 |
| Fan Type | NF-P12 | NF-A14 |
| Mounting System | SecuFirm2 | SecuFirm2+ |
Dimension comparison
Overview of the Noctua NH-U12S Redux and Noctua NH-D15 G2
The Noctua NH-U12S Redux is significantly more affordable than the Noctua NH-D15 G2, priced at C$62.95 versus C$209.95. While both are quality CPU coolers from Noctua, they cater to different user needs and preferences. The NH-U12S Redux offers a budget-friendly option with solid performance, while the NH-D15 G2 promises superior cooling capabilities and features for high-end systems.
Cooling Performance
The NH-D15 G2 stands out with its enhanced cooling performance, featuring eight heat pipes and 20% more surface area compared to its predecessor. This design allows the NH-D15 G2 to deliver optimal results on high-performance CPUs such as the AMD Ryzen 9 9950X and Intel Core Ultra 285K. In contrast, the NH-U12S Redux provides competent cooling with its single 120mm fan but is designed for users looking for a quieter operation without sacrificing too much performance, making it effective for most mid-range systems.
Design and Compatibility
In terms of design, the NH-U12S Redux is streamlined and compact, measuring 158mm in height, which ensures compatibility with most tower cases and does not obstruct RAM slots or PCIe slots on most motherboards. The NH-D15 G2, however, is a larger cooler that features an offset design with recessed lower fins, allowing it to clear top PCIe x16 slots effectively. Users with space constraints may prefer the NH-U12S Redux, while those with larger cases and more demanding cooling needs might benefit from the NH-D15 G2's advanced design.
Noise Levels
Both coolers maintain low noise levels during operation, but the NH-U12S Redux excels in quiet performance thanks to its NF-P12 redux-1700 120mm fan. It operates near silently at idle, making it an excellent choice for users who prioritise a quiet computing experience. The NH-D15 G2, equipped with two NF-A14x25r G2 140mm fans, also aims for silent operation but may produce slightly more noise under heavy loads, albeit still remaining a quiet option overall.
Installation and User Experience
Installation is straightforward for both coolers, with each including a high-quality thermal paste. The NH-U12S Redux comes with the NT-H1 thermal paste and a SecuFirm2 mounting system that supports a variety of Intel and AMD sockets. The NH-D15 G2 includes superior NT-H2 thermal paste along with a Torx-based SecuFirm2+ mounting system, which simplifies the installation process even further. Both products cater to users of different experience levels, but the enhanced installation features of the NH-D15 G2 may appeal to those looking for ease of setup on more complex builds.
Target Audience
The NH-U12S Redux is aimed at budget-conscious users and those with moderate performance needs, making it a smart choice for mainstream Intel Core and AMD Ryzen users. Its price point of C$62.95 reflects its positioning as an entry-level to mid-range cooling solution. Conversely, the NH-D15 G2 targets enthusiasts and gamers who require advanced cooling for high-performance CPUs. At C$209.95, it offers features that justify the price for users seeking the best cooling performance and efficiency.
Build Quality and Brand Reputation
Noctua is renowned for its exceptional build quality and reliability, and both coolers reflect this reputation. The NH-U12S Redux, while more affordable, still maintains the high standards associated with the brand. The NH-D15 G2, being a second-generation model, showcases further improvements and innovations that reinforce Noctua's commitment to quality. Users can expect durability and consistent performance from either product, but the NH-D15 G2's enhancements provide added assurance for high-demand environments.
Which should you buy?
Choosing between the Noctua NH-U12S Redux and the NH-D15 G2 ultimately depends on your specific needs and budget. If you are looking for an effective, budget-friendly cooling solution that provides reliable performance for everyday use, the NH-U12S Redux is an excellent choice at C$62.95. However, if you require top-tier cooling for high-end CPUs and are willing to invest more for superior performance and features, the NH-D15 G2 at C$209.95 is the clear winner.
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