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Thermalright LGA1851 CPU Contact Frame - Optimized vs Thermalrlght Peerless Assassin 120 SE CPU Air

Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on cooling and compatibility.

The Thermalrlght Peerless Assassin 120 SE offers superior cooling capabilities and broader compatibility, making it the better choice for performance-oriented users.

Why Thermalright LGA1851 CPU Contact Frame - Optimized is better

Price

Thermalright LGA1851 is significantly cheaper.

Installation

Easier installation process with included tools.

Size

Compact design fits snugly in smaller cases.

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Cooling

Superior heat management with dual fans and heat pipes.

Compatibility

Supports multiple CPU sockets including AMD.

Performance

Higher airflow performance rated at 66.17 CFM.

Overall score

Thermalright LGA1851 CPU Contact Frame - Optimized
65
Thermalrlght Peerless Assassin 120 SE CPU Air
85

Specifications

SpecThermalright LGA1851 CPU Contact Frame - OptimizedThermalrlght Peerless Assassin 120 SE CPU Air
MaterialAluminumAluminum/Copper
Price$9.99$32.90
Noise LevelN/A≤25.6dB(A)
AirflowN/A66.17 CFM
Socket CompatibilityLGA1851LGA1700/AM4

Dimension comparison

Thermalright LGA1851 CPU Contact Frame - OptimizedThermalrlght Peerless Assassin 120 SE CPU Air

Overview of the Products

In this comparison, we will take a closer look at the Thermalright LGA1851 CPU Contact Frame and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler. The Thermalright LGA1851 CPU Contact Frame is priced at $9.99, while the Thermalrlght Peerless Assassin 120 SE comes in at $32.90, making it about 229% more expensive than the contact frame. Each product serves a different purpose in the realm of CPU cooling and installation, which we will explore further.

Design and Build Quality

When it comes to design and build quality, the Thermalright LGA1851 CPU Contact Frame focuses on precision and durability. It's made from all-aluminum material with a CNC gold anodizing sandblasting process, designed to prevent CPU warping or bending. The frame's dimensions of 53.5 x 70 x 6.25 mm make it compact, ensuring it fits snugly onto the Intel Core Ultra Series CPU LGA1851 sockets.

On the other hand, the Thermalrlght Peerless Assassin 120 SE features a more robust cooling system with a dual tower heatsink and a combination of aluminum and copper materials. Its dimensions of 125 x 135 x 155 mm indicate a larger footprint, which is necessary for its enhanced cooling capabilities. This cooler also boasts an anodized brushed black top cover, giving it a sleek, modern appearance.

Performance

In terms of performance, the Thermalrlght Peerless Assassin 120 SE is designed for superior heat management, featuring six heat pipes and dual high-performance fans. The cooler's airflow performance is rated at 66.17 CFM, and it has a noise level of ≤25.6dB(A), making it effective yet relatively quiet during operation.

Conversely, the Thermalright LGA1851 CPU Contact Frame does not offer active cooling; instead, it focuses on maintaining optimal contact pressure between the CPU and cooler to prevent overheating and warping. While it doesn't provide cooling on its own, its design aims to improve the performance of the cooling solution it supports.

Compatibility

The Thermalright LGA1851 CPU Contact Frame is specifically compatible with Intel Core Ultra Series CPUs that utilize the LGA1851 socket. This specialization ensures a perfect fit and optimal performance for users with these CPUs. It also comes with an L-shaped screwdriver and necessary screws for easy installation.

The Thermalrlght Peerless Assassin 120 SE, however, offers broader compatibility. It supports multiple CPU sockets, including Intel's LGA 1700, 1150, 1151, 1155, 1156, and 1200, as well as AMD's AM4 and AM5 sockets. This versatility allows it to be used in a variety of systems, making it a more flexible choice for users who may upgrade their components in the future.

Installation Process

The installation process for the Thermalright LGA1851 CPU Contact Frame is designed to be straightforward. It includes an L-shaped screwdriver and screws, making it user-friendly for those who may not be experienced in hardware installation. The frame's design minimizes the risk of incorrect installation, ensuring that users can achieve the desired contact pressure without complications.

On the other hand, the installation of the Thermalrlght Peerless Assassin 120 SE is slightly more complex due to its larger size and the need to check for case and motherboard compatibility. It features an SS2 install system and a metal pressure plate for improved contact with the CPU, but users will need to utilize their motherboard's built-in backplate for AMD installations. This could be a consideration for those who prefer a simpler installation experience.

Price Point

The Thermalright LGA1851 CPU Contact Frame is priced at $9.99, making it an economical choice for users looking to enhance their CPU's contact pressure without breaking the bank.

In contrast, the Thermalrlght Peerless Assassin 120 SE, at $32.90, is significantly more expensive but offers advanced cooling features and broader compatibility. The price difference of about $22.91 (or 229%) reflects the Peerless Assassin's enhanced capabilities, making it more suitable for users with higher-performance cooling needs.

Target Audience

The Thermalright LGA1851 CPU Contact Frame is aimed at users who require a reliable solution for maintaining optimal CPU contact pressure, particularly those who have Intel Core Ultra Series CPUs. This product is ideal for budget-conscious consumers who prioritize function over form.

On the other hand, the Thermalrlght Peerless Assassin 120 SE is targeted at gamers and PC enthusiasts looking for high-performance cooling solutions for their systems. Its advanced features and broader compatibility make it a go-to choice for those who want to ensure optimal thermal performance during demanding tasks.

Which should you buy?

Choosing between the Thermalright LGA1851 CPU Contact Frame and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs. If you are looking for a budget-friendly option to correct CPU contact pressure, the Thermalright LGA1851 CPU Contact Frame at $9.99 is a suitable choice.

However, for users seeking a comprehensive cooling solution that supports multiple CPU sockets and offers superior thermal management, the Thermalrlght Peerless Assassin 120 SE at $32.90 is worth the investment. Each product has its merits, so consider your goals and system requirements before making a decision.