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Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalright LGA1851 CPU Contact Frame - Optimized

Updated August 2026 — Thermalright Assassin X 120R SE V2 CPU Cooler, 4× leads on design and noise level.

The Thermalright Assassin X 120R SE V2 CPU Cooler offers superior cooling performance and versatility compared to the LGA1851 CPU Contact Frame, which serves a more specialized purpose. For effective cooling, the cooler is the clear choice.

Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better

Cooling Performance

Assassin X 120R SE V2 provides active cooling with 1550 RPM fan.

Compatibility

Supports multiple Intel and AMD sockets.

Noise Level

Operates at a quiet 25.6 dB(A) during use.

Why Thermalright LGA1851 CPU Contact Frame - Optimized is better

Price

LGA1851 CPU Contact Frame is cheaper at $9.99.

Specialization

Designed specifically for LGA1851 socket optimization.

Installation

Includes tools for easy installation.

Overall score

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
85
Thermalright LGA1851 CPU Contact Frame - Optimized
65

Specifications

SpecThermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright LGA1851 CPU Contact Frame - Optimized
Max RPM15500
Airflow66.17 CFM0
Noise Level25.6 dB(A)0
MaterialAluminum/CopperAluminum
Socket CompatibilityLGA1150/1151/1155/1156/1200/1700/1851, AM4/AM5LGA1851

Dimension comparison

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright LGA1851 CPU Contact Frame - Optimized

Overview of the Thermalright Assassin X 120R SE V2 CPU Cooler

The Thermalright Assassin X 120R SE V2 CPU Cooler is a robust cooling solution for various Intel and AMD processors, priced at $16.59. It features four 6mm heat pipes and a 120mm RGB PWM fan that operates at a maximum speed of 1550 RPM. This model's design incorporates S-FDB bearings aimed at minimizing noise while maximizing cooling efficiency, making it suitable for a wide range of builds. Its dimensions of 120mm x 71mm x 148mm ensure it fits in most medium-sized cases, which is a crucial factor for users with limited space.

Overview of the Thermalright LGA1851 CPU Contact Frame

The Thermalright LGA1851 CPU Contact Frame is an essential accessory for users with Intel Core Ultra Series CPUs, retailing at $9.99. This product is designed specifically to optimize CPU contact pressure and prevent warping, which is vital for maintaining performance and longevity. Made from durable aluminum alloy and featuring a gold anodizing finish, it aims to provide a reliable alternative to the original CPU buckle. The frame includes an L-shaped screwdriver and screws for easy installation, making it a practical choice for DIY enthusiasts.

Performance Comparison

When comparing performance, the Thermalright Assassin X 120R SE V2 shines with its advanced cooling capabilities, thanks to its four heat pipes and efficient fan design. Operating at 1550 RPM, it can deliver an airflow of 66.17 CFM while maintaining a noise level of just 25.6 dB(A). In contrast, the LGA1851 CPU Contact Frame does not directly contribute to cooling performance but instead focuses on maintaining optimal contact between the CPU and cooler. Thus, while the Assassin X 120R SE V2 provides direct cooling benefits, the LGA1851 frame plays an important supporting role.

Compatibility and Installation

The Thermalright Assassin X 120R SE V2 is compatible with a wide array of CPU sockets, including Intel’s LGA1150, LGA1151, LGA1200, LGA1700, and LGA1851, as well as AMD's AM4 and AM5 sockets. This broad compatibility makes it a versatile choice for many builds. On the other hand, the LGA1851 CPU Contact Frame is specifically designed for Intel's LGA1851 sockets. Its installation is straightforward, requiring the included screwdriver and screws, yet it is limited in compatibility compared to the CPU cooler.

Build Quality and Materials

In terms of build quality, the Thermalright Assassin X 120R SE V2 features a robust aluminum heat sink and a pure copper base, which enhances its thermal conductivity. The use of S-FDB bearings in the fan adds to its durability and quiet operation, significantly improving the user experience. The LGA1851 CPU Contact Frame, made from aluminum alloy and featuring a gold anodizing process, offers durability and aesthetic appeal but does not engage in active cooling. Therefore, while both products boast quality materials, the Assassin X 120R SE V2 stands out in terms of thermal management.

Price Analysis

The Thermalright Assassin X 120R SE V2 CPU Cooler is priced at $16.59, making it a budget-friendly option for users seeking efficient cooling solutions. In contrast, the LGA1851 CPU Contact Frame is even more affordable at $9.99, about 17% cheaper than the cooler. However, it's essential to consider the different functionalities these products serve. While the cooler provides substantial cooling performance, the contact frame is a specialized accessory that enhances CPU stability, which justifies its lower price.

Noise Levels

Noise levels are a significant consideration for many PC builders. The Thermalright Assassin X 120R SE V2 operates at a maximum noise level of just 25.6 dB(A), which is impressively silent for a CPU cooler. This ensures a quiet computing environment, particularly during intense tasks. The LGA1851 CPU Contact Frame does not produce noise as it is a passive component. However, it indirectly contributes to a quieter setup by ensuring the CPU cooler can function effectively without interference.

Which should you buy?

Choosing between the Thermalright Assassin X 120R SE V2 CPU Cooler and the Thermalright LGA1851 CPU Contact Frame ultimately depends on your needs. If you require an effective and efficient cooling solution for your system, the Assassin X 120R SE V2 is the better choice, offering superior cooling performance and compatibility with multiple sockets. However, if you already have a suitable cooler and simply need to optimize CPU contact pressure for an Intel Core Ultra Series CPU, the LGA1851 CPU Contact Frame provides an excellent and cost-effective option.