Noctua NH-D15 chromax.Black, Dual-Tower CPU Cooler vs Thermalrlght Peerless Assassin 120 SE CPU Air
Updated August 2026 — Noctua NH-D15 chromax.Black, Dual-Tower CPU Cooler leads on design and cooling.
The Noctua NH-D15 chromax.Black offers superior cooling performance and quieter operation, making it the better choice for enthusiasts. However, the Thermalrlght Peerless Assassin 120 SE is a great budget option.
Why Noctua NH-D15 chromax.Black, Dual-Tower CPU Cooler is better
Cooling Performance
Noctua excels with dual-tower design and six heatpipes.
Noise Levels
Noctua operates more quietly under load.
Brand Reputation
Noctua is widely recognized for quality and reliability.
Why Thermalrlght Peerless Assassin 120 SE CPU Air is better
Price
Thermalrlght is significantly cheaper.
Installation
Thermalrlght has a straightforward installation process.
Size
Thermalrlght is more compact.
Overall score
Specifications
| Spec | Noctua NH-D15 chromax.Black, Dual-Tower CPU Cooler | Thermalrlght Peerless Assassin 120 SE CPU Air |
|---|---|---|
| Cooling Type | Air | Air |
| Socket Support | LGA1851, LGA1700, AM5 | LGA1150, AM4 |
| Fan Speed | Max 1500 RPM | Max 1550 RPM |
| Noise Level | ≤24 dB(A) | ≤25.6 dB(A) |
| Warranty | 6 years | 3 years |
Dimension comparison
Price Comparison
The Noctua NH-D15 chromax.Black is priced at $134.95, while the Thermalrlght Peerless Assassin 120 SE is significantly cheaper at $32.90. This means the Noctua cooler costs about 309% more than its rival. The price difference may be a key factor for budget-conscious consumers looking for effective cooling solutions. While the Noctua model is renowned for its premium build and performance, the Thermalrlght offering presents an appealing option for those who want solid cooling without breaking the bank.
Design and Aesthetics
In terms of design, the Noctua NH-D15 chromax.Black features a sleek all-black aesthetic that fits well with various PC builds. It boasts an extra-wide dual-tower design that not only enhances its cooling capability but also adds an elegant touch to any setup. On the other hand, the Thermalrlght Peerless Assassin 120 SE sports a brushed black top cover and an aluminum heatsink, which contributes to its modern appearance. While both coolers have their unique visual appeal, the Noctua stands out for its premium design that has garnered over 300 awards and recommendations from hardware websites.
Cooling Performance
When it comes to cooling efficiency, the Noctua NH-D15 chromax.Black excels with its dual-tower design equipped with six heatpipes and dual NF-A15 140mm fans. This configuration allows it to provide maximum cooling performance, comparable to many all-in-one water coolers, making it ideal for overclockers. In contrast, the Thermalrlght Peerless Assassin 120 SE features six 6mm heat pipes and dual 120mm TL-C12C PWM fans. While it also offers effective cooling, it may not reach the same level of performance under heavy loads as the Noctua model.
Noise Levels
Noise is a critical factor for many PC enthusiasts, especially those seeking a quieter operation. The Noctua NH-D15 chromax.Black is designed for whisper-quiet performance, thanks to its Low-Noise Adaptors and PWM for automatic speed control. Under load, it can still maintain a low noise level, making it suitable for silent builds. The Thermalrlght Peerless Assassin 120 SE, with a rated noise level of around 25.6 dB(A), is also designed to be relatively quiet, though it may not achieve the same ultra-quiet performance as the Noctua. For users prioritizing silence, the Noctua may be the better choice.
Installation Process
Both coolers offer a straightforward installation process, but the Noctua NH-D15 chromax.Black provides additional convenience with its SecuFirm2 mounting system. This system allows for easy installation on a wide range of Intel and AMD sockets, ensuring compatibility with most motherboards. The Thermalrlght Peerless Assassin 120 SE also includes an SS2 installation system but requires using the motherboard's built-in backplate for AM4 and AM5 installations. While both products are user-friendly, the Noctua offers a slight edge in terms of versatility and ease of setup.
Compatibility
Compatibility is a vital consideration when selecting a CPU cooler, and both models cater to a range of sockets. The Noctua NH-D15 chromax.Black supports Intel LGA1851, LGA1700, LGA1200, and LGA115x, along with AMD AM5 and AM4. Meanwhile, the Thermalrlght Peerless Assassin 120 SE supports Intel LGA1150, LGA1151, LGA1155, LGA1156, LGA1200, and LGA1700, as well as AMD AM4 and AM5. Both coolers cover the essentials, but the Noctua's broader compatibility with various Intel sockets could be a deciding factor for users with specific setups.
Brand Reputation
Brand reputation can often influence purchasing decisions, and Noctua is known for its high-quality, reliable cooling solutions backed by a six-year manufacturer’s warranty. The brand has established a strong presence in the market, often considered a go-to for premium cooling. Conversely, Thermalrlght also has a positive reputation but may not have the same level of acclaim as Noctua. For those looking for a well-regarded product with proven quality, the Noctua NH-D15 chromax.Black might be the preferred option.
Which should you buy?
Choosing between the Noctua NH-D15 chromax.Black and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs and budget. If you prioritize premium cooling performance, silent operation, and brand reputation, the Noctua is worth the investment at $134.95. However, if you are looking for a budget-friendly option with solid cooling capabilities, the Thermalrlght at $32.90 offers excellent value for money. Each cooler has its strengths, making them suitable for different types of users.

