Thermalright Peerless Assassin 120 SE V2 CPU Cooler vs Noctua NH-D15 G2 LBC
Updated August 2026 — The Thermalright Peerless Assassin 120 SE V2 offers great value for budget-conscious users, while the Noctua NH-D15 G2 LBC excels in performance and quiet operation. Choose based on your specific needs and budget.
The Thermalright Peerless Assassin 120 SE V2 offers great value for budget-conscious users, while the Noctua NH-D15 G2 LBC excels in performance and quiet operation. Choose based on your specific needs and budget.
Why Thermalright Peerless Assassin 120 SE V2 CPU Cooler is better
price
Thermalright is significantly cheaper at C$54.90.
compatibility
Supports a wider range of Intel and AMD sockets.
installation
Simpler installation process with clear instructions.
Why Noctua NH-D15 G2 LBC is better
performance
Superior cooling performance with advanced fan design.
noise level
Engineered for near-silent operation.
build quality
Dual-tower design with eight heat pipes for better heat dissipation.
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 SE V2 CPU Cooler | Noctua NH-D15 G2 LBC |
|---|---|---|
| TDP | 265W | unknown |
| Max RPM | 1850 | unknown |
| Airflow | 88.19 CFM | unknown |
| Noise Level | 29.5 dB(A) | unknown |
| Socket Support | LGA 1851/1700/1200/115X, AM4/AM5 | AM4/AM5 only |
Dimension comparison
Overview of Thermalright Peerless Assassin 120 SE V2 and Noctua NH-D15 G2 LBC
The Thermalright Peerless Assassin 120 SE V2 is significantly more affordable than the Noctua NH-D15 G2 LBC, with a price of C$54.90 compared to C$209.95. This price difference may be a decisive factor for budget-conscious consumers looking for effective cooling solutions for their CPUs. While both coolers offer excellent thermal performance, their features and design cater to different user needs and preferences.
Design and Build Quality
The Thermalright Peerless Assassin 120 SE V2 measures 125(L)x135(W)x155(H)mm and is constructed with an aluminum fin on a copper bottom, providing a robust design intended for efficient heat dissipation. It weighs 610 grams, making it relatively lightweight compared to other high-performance coolers. In contrast, the Noctua NH-D15 G2 LBC features a dual-tower design that boasts eight heat pipes and a larger surface area, which enhances its cooling capability. However, the NH-D15 G2 LBC is more substantial, designed for users seeking top-tier performance and willing to accommodate the added weight in their builds.
Cooling Performance
Cooling performance is a critical consideration for CPU coolers, and both the Thermalright Peerless Assassin 120 SE V2 and Noctua NH-D15 G2 LBC excel in this area but with different approaches. The Thermalright cooler features six heat pipes and a TDP (Thermal Design Power) of up to 265W, making it suitable for high-performance CPUs. It includes dual thickened PWM fans that can reach speeds of 1850 RPM, generating airflow of 88.19 CFM while maintaining a noise level of 29.5 dB(A). On the other hand, the Noctua cooler comes with two 140mm NF-A14x25r G2 fans, designed for quiet operation while still delivering excellent cooling performance. This cooler is especially effective for high-end processors, optimised for CPUs like the Ryzen 9950X, and is designed to excel in quiet environments.
Compatibility
Compatibility is a crucial aspect when choosing a CPU cooler. The Thermalright Peerless Assassin 120 SE V2 supports a wide range of Intel and AMD sockets, including Intel LGA 1851, 1700, 1200, and 115X, as well as AMD AM4 and AM5 platforms. This broad compatibility makes it a versatile choice for various builds. Conversely, the Noctua NH-D15 G2 LBC is tailored for specific platforms, particularly AMD AM4 and AM5. However, it is not recommended for Intel’s LGA1700, LGA1200, or LGA115x sockets, which limits its usability for users with those Intel processors. This distinction is essential for ensuring that users select a cooler compatible with their specific CPU.
Noise Levels
The Thermalright Peerless Assassin 120 SE V2 operates at a maximum noise level of 29.5 dB(A), which is relatively quiet for a cooler of its performance class. This makes it an appealing option for users who prefer a quieter computing environment. In contrast, the Noctua NH-D15 G2 LBC is engineered for near-silent operation, particularly under idle conditions, thanks to its advanced fan design and PWM control. While specific dB(A) levels for the Noctua model are not provided, its reputation for excellent acoustic performance is well-documented, making it a preferred choice for users who prioritise silence alongside performance.
Cooling Technology
The Thermalright Peerless Assassin 120 SE V2 employs AGHP GEN 5.0 technology, which enhances heat pipe efficiency by addressing the inverse gravity effect in various orientations. This technology aims to optimise heat transfer and cooling performance. In contrast, the Noctua NH-D15 G2 LBC features a sophisticated design with offset fins, allowing for greater RAM clearance and compatibility with high-performance RAM modules. This design consideration can be crucial for users building high-performance systems with limited space, as it maximises airflow while minimising obstruction.
Installation Process
The installation process can significantly impact the user experience, and both coolers have different approaches. The Thermalright Peerless Assassin 120 SE V2 includes metal fasteners for both Intel and AMD platforms, providing a straightforward installation experience. The accompanying mounting instructions and tutorials further simplify the setup process. Meanwhile, the Noctua NH-D15 G2 LBC also comes with a comprehensive installation kit, including a special NM-i20xx kit for optimal installation on specific Intel platforms. However, the additional complexity may be daunting for novice builders, particularly given its larger size and weight.
Which should you buy?
Choosing between the Thermalright Peerless Assassin 120 SE V2 and the Noctua NH-D15 G2 LBC ultimately depends on your specific needs and budget. If you are looking for an affordable, efficient cooling solution that is easy to install and compatible with a wide range of CPU platforms, the Thermalright Peerless Assassin 120 SE V2 is an excellent choice at C$54.90. However, if you require top-tier cooling performance for high-end CPUs and are willing to invest more for quieter operation and advanced features, the Noctua NH-D15 G2 LBC at C$209.95 may be the better option. Assess your priorities concerning price, performance, and compatibility to make the best choice for your build.
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