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Thermalright Peerless Assassin 120 SE CPU Cooler, vs Thermalrlght Peerless Assassin 120 SE CPU Air

Updated August 2026 — Thermalright Peerless Assassin 120 SE CPU Cooler, leads on weight.

The Thermalright Peerless Assassin 120 SE offers a more robust design and installation system, while the Thermalrlght Peerless Assassin 120 SE is a budget-friendly alternative with similar performance.

Why Thermalright Peerless Assassin 120 SE CPU Cooler, is better

Build Quality

Solid aluminum construction with metal fasteners

Installation

Enhanced mounting system for stability

Brand Reputation

Established brand with over 20 years of experience

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Price

Approximately 34% cheaper

Aesthetic

Brushed black anodized top cover

RAM Compatibility

Cutout in fan fins for better RAM clearance

Overall score

Thermalright Peerless Assassin 120 SE CPU Cooler,
85
Thermalrlght Peerless Assassin 120 SE CPU Air
75

Specifications

SpecThermalright Peerless Assassin 120 SE CPU Cooler,Thermalrlght Peerless Assassin 120 SE CPU Air
Airflow66.17 CFM66.17 CFM
Fan Speed1550 RPM1550 RPM
Heat Pipes6 x 6mm6 x 6mm
Socket SupportIntel LGA 115X/1200/1700, AMD AM4/AM5Intel LGA 1150/1151/1155/1156/1200/1700, AMD AM4/AM5
MaterialAluminumAluminum and Copper

Dimension comparison

Thermalright Peerless Assassin 120 SE CPU Cooler,Thermalrlght Peerless Assassin 120 SE CPU Air

Overview of the Products

The Thermalright Peerless Assassin 120 SE CPU Cooler and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler are two compelling options for anyone seeking reliable cooling solutions for their CPUs. The first product is priced at $49.99, while the second is notably cheaper at $32.90, making it about 34% less expensive. Both coolers feature advanced technologies and similar specifications, which makes comparing their performance and value crucial for potential buyers.

Design and Build Quality

In terms of design, both coolers feature a dual tower configuration that enhances heat dissipation. The Thermalright Peerless Assassin 120 SE has a solid aluminum construction with a metal fastener system for stable installation, while the Thermalrlght version boasts a brushed black anodized top cover for a more premium look. Both products have dimensions of 125(L)x135(W)x155(H)mm, making them compact and manageable for most cases. However, the Thermalrlght Peerless Assassin emphasizes an offset asymmetric layout that improves compatibility with graphics cards and motherboards, which could be a deciding factor for gamers or PC builders.

Cooling Performance

Both coolers utilize AGHP technology and six 6mm heat pipes to optimize heat transfer, ensuring effective cooling performance. The Thermalright Peerless Assassin 120 SE claims to deliver extreme CPU cooling performance with a maximum airflow of 66.17 CFM and a noise level of just 25.6 dB(A). Similarly, the Thermalrlght Peerless Assassin 120 SE offers the same airflow and noise specifications. While both coolers promise effective cooling, the Thermalright cooler's focus on enhanced installation with a solid mounting system may provide a slight edge in performance consistency.

Fan Specifications

The fan specifications are another critical area where both products shine. Both the Thermalright and Thermalrlght coolers come with dual 120mm TL-C12C PWM fans that operate at a speed of 1550 RPM. This identical fan setup allows both products to maintain similar noise levels and airflow rates, which are essential for keeping your CPU cool during intensive tasks. However, the Thermalrlght model features a cutout in the fan fins for RAM module compatibility, which may make it easier to install in tighter spaces, providing a practical advantage for some users.

Compatibility

Compatibility is a significant consideration for CPU coolers, and both products cater to a wide range of Intel and AMD sockets. The Thermalright Peerless Assassin 120 SE supports Intel sockets LGA 115X/1200/1700 and AMD AM4/AM5. Similarly, the Thermalrlght Peerless Assassin covers the same Intel and AMD sockets, ensuring broad compatibility. However, both coolers require the original motherboard's built-in backplate for AMD installations, which some users may overlook. The equal compatibility range makes either cooler a viable choice, depending largely on other factors.

Price Analysis

The price difference between the two coolers is substantial, with the Thermalright Peerless Assassin 120 SE priced at $49.99 and the Thermalrlght Peerless Assassin at $32.90. This makes the Thermalrlght cooler approximately 34% cheaper, offering a budget-friendly alternative without sacrificing essential features. For users who are looking to save money while still acquiring a quality cooling solution, the Thermalrlght Peerless Assassin presents a compelling option.

Brand Reputation and Trust

Thermalright, the brand behind both products, has over 20 years of experience in developing computer accessories, which lends credibility to both coolers. While there is no specific bestseller rank mentioned for either product, Thermalright's established reputation in the market suggests that both coolers have been well-received by consumers. This trust in the brand makes either choice potentially reliable, but the lower price of the Thermalrlght Peerless Assassin could attract budget-conscious consumers more effectively.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 SE and the Thermalrlght Peerless Assassin 120 SE ultimately comes down to budget and specific needs. The Thermalright model offers a slightly more robust design and installation system, which might appeal to those seeking enhanced cooling performance. However, if you prioritize cost savings and still desire a high-quality cooler, the Thermalrlght version at $32.90 is a fantastic option, providing identical cooling capabilities for about 34% less.