6 Best Alternatives to the Thermalright Peerless Assassin 120 CPU (2026)
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Finding suitable thermalright peerless assassin 120 CPU alternatives depends on your specific PC case dimensions and cooling requirements. The original cooler provides strong thermal transfer with its double-tower heatsink, pure copper base, and six 6mm sintered copper heat pipes using AGHP technology. Two 120mm PWM fans deliver up to 66.17 CFM of airflow at 1550 RPM, maintaining noise levels under 25.6 dBA while supporting modern AMD AM4, AM5, and Intel LGA sockets.
Still, its 157mm height and 135mm width may exceed your chassis space or interfere with tall RAM modules. You might prefer a compact single-tower design, an all-black finish, integrated ARGB lighting, or a reduced 135mm height for small-form-factor enclosures. We selected these 6 options because their published specifications directly overlap with the original baseline. They provide comparable multi-socket mounting, six-pipe thermal designs, and 120mm fan mounts to fit your specific build needs in 2026.
Our top pick: Thermalright Peerless Assassin 120 Dual Fan Cooler.
Comparing the Top Peerless Assassin Alternatives
Thermalright Peerless Assassin Dual Tower Air Cooler
The Thermalright Peerless Assassin Dual Tower Air Cooler gives you a slightly lower 155mm vertical height compared to the original cooler's 157mm measurement. This 2mm reduction helps you fit a twin-tower setup into mid-tower cases with tighter clearance limits. Like the baseline model, it features six copper heat pipes and two 120mm fans across standard AMD and Intel sockets. However, it registers a heavier weight of 2 pounds versus the original 1-pound listed weight, and its specifications omit mounting hardware for legacy Intel LGA 2011 and LGA 2066 sockets. You should pick this alternative if your chassis has strict 155mm height restrictions and you run mainstream sockets.
Thermalright Peerless Assassin 120 SE Dual Tower
The Thermalright Peerless Assassin 120 SE Dual Tower reduces total height to 155mm, shedding 2mm compared to the original 157mm profile. This makes it easier to fit inside cases with restricted side panel clearance. It maintains twin heatsinks, six copper heat pipes, and dual 120mm fans for reliable airflow across LGA 1700, LGA 1851, AM4, and AM5 sockets. In exchange for the lower height, this cooler lists a heavier weight of 2.14 pounds against the 1-pound baseline, and it does not list mounting hardware for legacy LGA 2011 or LGA 2066 sockets. Pick this model if you need dependable twin-tower thermal dissipation within a strict 155mm vertical envelope.
Thermalright Peerless Assassin 120 CPU Cooler
This Thermalright Peerless Assassin 120 CPU Cooler variant provides a 155mm standing height, which is 2mm shorter than the original 157mm frame. It carries over the double-tower configuration, six copper heat pipes, and dual 120mm cooling fans. To install it on AMD motherboards, you must use your motherboard's original AMD factory backplate rather than separate included hardware. It also lacks compatibility for legacy Intel LGA 2011 and LGA 2066 platforms found on the original specification sheet. Choose this cooler if you want the standard dual-fan cooling performance of the original design but need the slightly shorter 155mm clearance and have your factory AMD mounting backplate ready.
Thermalright Burst Assassin 120 ARGB
The Thermalright Burst Assassin 120 ARGB differs significantly from the original by using a single-tower heatsink instead of a dual-tower structure. It cuts heatsink width down to just 2 inches, compared to the original's 5.31-inch width, leaving substantially more clearance around motherboard components and RAM slots. It also adds integrated ARGB lighting, which the original model lacks. However, you give up the second fin stack and second 120mm fan, relying instead on a single fan delivering 66.17 CFM across six heat pipes at a 154mm height. You should select this alternative if you need extra interior clearance, prefer ARGB aesthetics, and want a slimmer single-tower layout.
Thermalright Peerless Assassin 120 Mini Black
The Thermalright Peerless Assassin 120 Mini Black provides a much more compact 135mm height, saving 22mm of vertical clearance compared to the original 157mm cooler. It also features an all-black finish. While it retains six heat pipes, it uses a single 120mm PWM fan instead of the dual-fan arrangement on the original twin-tower unit. Furthermore, its socket list includes AM4, AM5, LGA 1851, and LGA 1200, but excludes Intel LGA 1700, LGA 2011, and LGA 2066. You should select this cooler if you are assembling a compact desktop chassis that cannot fit taller 157mm heatsinks and you want an all-black color scheme.
Thermalright Peerless Assassin 120 SE Aluminum Cooler
The Thermalright Peerless Assassin 120 SE Aluminum Cooler stands at 155mm in height, providing a 2mm lower vertical clearance than the original 157mm model. It features an aluminum dual-tower build with six copper heat pipes and dual 120mm fans for multi-socket cooling. Like some other SE variants, mounting on AMD systems requires you to supply your motherboard's factory AMD backplate. Its documented compatibility also omits Intel LGA 2011 and LGA 2066 support provided by the baseline cooler. Pick this alternative if your chassis restricts cooler height to 155mm, you have the standard AMD backplate, and you want an aluminum twin-tower dual-fan cooler.
Quick picks
Our 7 picks
Thermalright Peerless Assassin 120 Dual Fan Cooler
Best for: standard mid-tower dual-fan desktop builds
- Socket Compatibility
- AM4/AM5, LGA1700/1200/2011/1851
- Cooler Height
- 157mm
- Heat Pipes
- 6
- Tower Design
- Double tower
- Fan Size
- 120mm
- Fan Speed
- 1550rpm±10%
View on Amazon: Thermalright Peerless Assassin 120 Dual Fan Cooler
The Thermalright Peerless Assassin 120 is a dual-tower CPU air cooler built with six 6mm copper heat pipes and an aluminum heatsink. It stands 157mm tall and includes two 120mm PWM fans that deliver up to 66.17 CFM of airflow at 1550 RPM. If you need balanced cooling performance for AMD AM4, AM5, or modern Intel desktop sockets without exceeding standard mid-tower case clearances, this baseline twin-tower configuration fits your build.
Pros
- Dual-tower aluminum heatsink with six 6mm copper heat pipes
- Two 120mm PWM fans delivering up to 66.17 CFM of airflow
- Maximum rated noise level kept to 25.6 dB(A)
- Hardware support for AMD AM4/AM5 and Intel LGA 1700/1851 sockets
Cons
- Vertical clearance requires a chassis depth of at least 157mm
- Twin-tower 135mm width occupies substantial space over motherboard components
Good fit if
- You have a PC chassis with at least 157mm of vertical CPU cooler clearance.
- You need dual-tower air cooling for AMD AM4, AM5, or Intel LGA 1700/1851 platforms.
- You want two 120mm PWM fans balancing up to 1550 RPM with sub-26 dB(A) acoustic limits.
Skip if
- You build inside a compact small-form-factor case with under 157mm of clearance.
- You require a single-tower design for unrestricted component visibility and access.
Verdict: Thermalright Peerless Assassin 120 Dual-Tower Cooler pairs a six-heatpipe twin heatsink with two 120mm PWM fans for reliable air cooling across current Intel and AMD sockets. It serves as a dependable standard baseline for high-airflow desktop configurations.
Thermalright Peerless Assassin Dual Tower Air Cooler
Best for: mid-tower systems needing dual-tower air cooling
- Socket Compatibility
- AM4, AM5, LGA1700, LGA1851, LGA1200
- Cooler Height
- 155 mm
- Heat Pipes
- 6
- Tower Design
- Dual-Tower
- Fan Size
- 120 mm
- Fan Speed
- 1550 RPM
View on Amazon: Thermalright Peerless Assassin Dual Tower Air Cooler
The cooler is a dual-tower heatsink equipped with six 6mm copper heat pipes and two 120mm PWM fans. It stands 155mm tall and operates at up to 1550 RPM, moving up to 66.17 CFM of airflow while rated at 25.6 dB(A) maximum noise. You will find this heatsink suits your system if you want multi-socket support across Intel and AMD motherboards with standard 155mm case clearance.
Pros
- Six 6mm copper heat pipes using AGHP anti-gravity technology
- Dual 120mm PWM fans delivering up to 66.17 CFM airflow
- Maximum rated fan noise level of 25.6 dB(A)
- Compact dual-tower height of 155mm
Cons
- Installation on AMD motherboards requires the factory backplate
- Base configuration includes no integrated RGB lighting
Good fit if
- You have a PC chassis with at least 155mm of vertical cooler clearance.
- You use modern Intel LGA 1700/1851 or AMD AM4/AM5 processor sockets.
- You want dual-fan PWM airflow while maintaining a noise level under 26 dB(A).
Skip if
- You no longer have your motherboard original stock AMD backplate.
- You require a compact chassis cooler under 155mm in height.
Verdict: Thermalright Peerless Assassin Dual-Tower CPU Cooler delivers dual-fan airflow and six copper heat pipes within a 155mm height profile. It provides broad AMD and Intel socket compatibility for standard desktop computer cases.
Thermalright Peerless Assassin 120 SE Dual Tower
Best for: quiet twin-tower cooling in mid-tower cases
- Socket Compatibility
- AM4/AM5, LGA 1700/1150/1151/1200/1851
- Cooler Height
- 155mm
- Heat Pipes
- 6
- Tower Design
- Dual-Tower
- Fan Size
- 120mm
- Fan Speed
- 1550 RPM
View on Amazon: Thermalright Peerless Assassin 120 SE Dual Tower
The Thermalright Peerless Assassin 120 SE Dual-Tower Cooler is a dual-heatsink air cooler designed for mainstream processors. It features six 6mm copper heat pipes, an aluminum fin stack, and two 120mm PWM fans that reach up to 1550 RPM. At 155mm tall, it fits standard mid-tower computer cases easily. This setup suits you if you need balanced airflow and quiet cooling under 25.6 dB(A) for Intel or AMD platforms.
Pros
- Dual 120mm PWM fans deliver up to 66.17 CFM of airflow
- Six 6mm copper heat pipes utilize AGHP anti-gravity technology
- Compact 155mm total height fits most standard mid-tower cases
- Noise level is rated at or below 25.6 dB(A)
Cons
- No integrated RGB or ARGB lighting included on this base model
- Fan speed is capped at 1550 RPM
- Exceeds clearance limits of compact small-form-factor cases
Good fit if
- You need a dual-tower cooler that fits cases with at least 155mm clearance.
- You use an Intel LGA 1700/1851 or AMD AM4/AM5 socket motherboard.
- You prefer noise levels that stay at or below 25.6 dB(A).
Skip if
- You build inside a compact case with under 155mm of cooler clearance.
- You want built-in ARGB lighting elements on your cooling fans.
Verdict: Thermalright Peerless Assassin 120 SE Dual-Tower Cooler delivers solid twin-tower thermal dissipation with two 120mm fans and six copper heat pipes. It gives you dependable multi-socket cooling while maintaining a modest 155mm vertical clearance.
Thermalright Peerless Assassin 120 CPU Cooler
Best for: dual-fan cooling in standard mid-tower cases
- Socket Compatibility
- LGA1700/1851/1200/1150/1151, AM4/AM5
- Cooler Height
- 155mm
- Heat Pipes
- 6
- Tower Design
- Dual tower
- Fan Size
- 120mm
- Fan Speed
- 1550 RPM
View on Amazon: Thermalright Peerless Assassin 120 CPU Cooler
This dual-tower heatsink uses six 6mm copper heat pipes and two 120mm PWM fans to push up to 66.17 CFM of airflow. Standing 155mm tall, it fits cases with standard clearance and features fin cutouts for RAM clearance. It supports Intel LGA1700, LGA1851, and older sockets alongside AMD AM4 and AM5. It suits you if you need balanced, high-airflow cooling without exceeding a 155mm cooler height limit.
Pros
- Six 6mm copper heat pipes soldered to a copper base
- Dual 120mm PWM fans delivering up to 66.17 CFM airflow
- Moderate 155mm overall height fits standard cases
- Fins include cutouts for RAM module clearance
Cons
- Requires original AMD motherboard backplate for AM4 and AM5 installation
- Dual-tower 135mm width requires verification of motherboard and case clearance
Good fit if
- You need a dual-tower cooler that stays within a 155mm height limit.
- You have an Intel LGA1700/1851 or AMD AM4/AM5 board with its stock backplate.
- You want dual 120mm PWM fans operating at up to 1550 RPM.
Skip if
- You no longer have your original AMD AM4 or AM5 motherboard backplate.
- You build in a compact chassis that cannot clear a 135mm width or 155mm height.
Verdict: Thermalright Peerless Assassin 120mm CPU Cooler delivers dual-tower thermal transfer with six copper heat pipes and dual 120mm fans at a 155mm height. It is a dependable fit if your case accepts its 135mm width and you have the original AMD backplate.
Thermalright Burst Assassin 120 ARGB
Best for: compact single-tower mid-tower PC builds
- Socket Compatibility
- AM4, AM5, LGA1700/1851/1150/1151/1200
- Cooler Height
- 154 mm
- Heat Pipes
- 6
- Tower Design
- Single-Tower
- Fan Size
- 120 mm
- Fan Speed
- 1550 RPM
The Thermalright Burst Assassin 120 ARGB is a single-tower air cooler equipped with six 6mm heat pipes and a 120mm PWM ARGB fan. Standing at 154mm tall with a 77mm width, it offers a slimmer footprint than dual-tower options while retaining a pure copper base. This cooler suits you if you need reliable CPU cooling that fits tighter cases without blocking nearby components.
Pros
- Six 6mm AGHP copper heat pipes paired with a pure copper base
- Compact 154mm height fits standard mid-tower chassis
- 120mm PWM fan delivers up to 66.17 CFM airflow at 25.6 dB(A) maximum noise
- Broad socket compatibility covering AMD AM4/AM5 and Intel LGA 1700/1851
Cons
- Includes only one 120mm fan rather than dual fans
- Single-tower design provides less surface area than dual-tower alternatives
Good fit if
- You need a 154mm cooler height to fit inside a moderate-depth mid-tower case.
- You prefer a 77mm slim profile to maintain clearance around memory slots.
- You want integrated ARGB lighting with 4-pin PWM speed control.
Skip if
- You want a dual-tower heatsink for maximum fin surface area.
- You require an out-of-the-box multi-fan configuration.
Verdict: Thermalright Burst Assassin 120 ARGB CPU Cooler delivers six-pipe heat dissipation within an efficient 154mm single-tower layout. It gives you dependable 66.17 CFM airflow while saving interior space inside your chassis.
Thermalright Peerless Assassin 120 Mini Black
Best for: compact PC cases needing all-black cooling
- Cooler Height
- 135 mm
- Heat Pipes
- 6
- Fan Size
- 120mm
- Fan Speed
- 1500 RPM
- Socket Compatibility
- AM4, AM5, LGA 1851, LGA 1200, LGA 1150, LGA 1151
- Color
- Black
View on Amazon: Thermalright Peerless Assassin 120 Mini Black
The Thermalright Peerless Assassin 120 Mini Black is a compact CPU air cooler finished with an antioxidant black coating. It stands 135 mm tall and uses six 6 mm heat pipes paired with a single 120 mm PWM fan pushing up to 66.87 CFM of airflow. If you need a lower-profile black cooler that supports modern AMD AM5 and Intel LGA 1700 or 1851 sockets, this model fits your system.
Pros
- 135 mm total cooler height for compact clearance
- Six 6 mm AGHP heat pipes with full black plating
- 120 mm PWM fan with up to 66.87 CFM airflow
- Broad socket support including AM5, LGA 1700, and LGA 1851
Cons
- Includes only a single 120 mm fan
- No integrated RGB or ARGB lighting
- Fan bearing life rated at 20,000 hours
Good fit if
- You need a CPU cooler height under 140 mm for your case clearance.
- You want an all-black heatsink with matching coated heat pipes.
- You use an Intel LGA 1700/1851 or AMD AM4/AM5 processor socket.
Skip if
- You want integrated lighting on your cooler fins or fan.
- You require a dual-fan cooler setup out of the box.
Verdict: Thermalright Peerless Assassin 120 Mini Black delivers six heat pipes and a 120 mm PWM fan in a 135 mm tall, fully blackened design. It gives you solid multi-socket compatibility and clean aesthetics for builds with restricted height clearance.
Thermalright Peerless Assassin 120 SE Aluminum Cooler
Best for: cases needing dual-tower aluminum cooling
- Socket Compatibility
- AM4, AM5, LGA1851, LGA1700, LGA1200
- Cooler Height
- 155mm
- Heat Pipes
- 6
- Tower Design
- Dual-Tower
- Fan Size
- 120mm
- Fan Speed
- 1550 RPM
View on Amazon: Thermalright Peerless Assassin 120 SE Aluminum Cooler
The Thermalright Peerless Assassin 120 SE Aluminum Cooler is a dual-tower air cooler featuring an aluminum heatsink with six 6mm copper heat pipes. It stands 155mm tall and includes two 120mm PWM fans running up to 1550 RPM with a rated maximum airflow of 66.17 CFM. Fin cutouts provide RAM clearance, making it suitable if you need dual-tower performance for standard AMD or Intel desktop sockets.
Pros
- Six 6mm AGHP copper heat pipes soldered to a copper base
- Dual 120mm PWM fans deliver up to 66.17 CFM of airflow
- 155mm overall height fits standard mid-tower computer cases
- Cutouts on heatsink fins provide clearance for memory modules
Cons
- Requires your original motherboard backplate for AM4 and AM5 installation
- Dual-tower dimensions of 135mm width require adequate motherboard clearance
Good fit if
- You have a PC chassis with at least 155mm of vertical cooler clearance.
- You still possess the original AMD stock backplate for your AM4 or AM5 motherboard.
- You want two 120mm PWM fans operating at speeds up to 1550 RPM.
Skip if
- You misplaced the original factory backplate for your AM4 or AM5 board.
- You need an ultra-compact single-tower design for tight socket spaces.
Verdict: Thermalright Peerless Assassin 120 SE Aluminum Cooler delivers dual-tower cooling with six copper heat pipes and dual 120mm fans at a moderate 155mm height. It is a capable cooling option if your chassis accommodates its 135mm width and you have the factory AMD backplate.
Specifications side by side
| Spec | Thermalright Peerless Assassin 120 Dual Fan Cooler | Thermalright Peerless Assassin Dual Tower Air Cooler | Thermalright Peerless Assassin 120 SE Dual Tower | Thermalright Peerless Assassin 120 CPU Cooler | Thermalright Burst Assassin 120 ARGB | Thermalright Peerless Assassin 120 Mini Black | Thermalright Peerless Assassin 120 SE Aluminum Cooler |
|---|---|---|---|---|---|---|---|
| Socket Compatibility | AM4/AM5, LGA1700/1200/2011/1851 | AM4, AM5, LGA1700, LGA1851, LGA1200 | AM4/AM5, LGA 1700/1150/1151/1200/1851 | LGA1700/1851/1200/1150/1151, AM4/AM5 | AM4, AM5, LGA1700/1851/1150/1151/1200 | not specified | AM4, AM5, LGA1851, LGA1700, LGA1200 |
| Cooler Height | 157mm | 155 mm | 155mm | 155mm | 154 mm | 135 mm | 155mm |
| Heat Pipes | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Tower Design | Double tower | Dual-Tower | Dual-Tower | Dual tower | Single-Tower | not specified | Dual-Tower |
| Fan Size | 120mm | 120 mm | 120mm | 120mm | 120 mm | 120mm | 120mm |
| Fan Speed | 1550rpm±10% | 1550 RPM | 1550 RPM | 1550 RPM | 1550 RPM | 1500 RPM | 1550 RPM |
| Lighting | not specified | not specified | not specified | not specified | ARGB | not specified | not specified |
| Color | PA120 | PA120 SE | PA120 SE | PA120 SE | BA120 ARGB | Black | not specified |
| Material | not specified | not specified | not specified | not specified | not specified | not specified | Aluminum |
| Features | not specified | not specified | not specified | not specified | Fan | Fan | not specified |
| Dimensions | 6.18 × 5.31 × 4.92 inches | 6.1 × 5.31 × 4.92 inches | 4.92 × 5.31 × 6.1 inches | 4.92 × 5.31 × 6.1 inches | 4.9 × 2 × 6 inches | 4.33 × 5.31 × 4.92 inches | 6.1 × 4.92 × 5.31 inches |
| Weight | 1 pounds | 2 pounds | 2.14 pounds | not specified | 1.12 pounds | 3.53 ounces | not specified |
| Size | PA120 series | PA120 SE series | 6 Heatpipes | not specified | 4 Heatpies | not specified | not specified |
| Model | LM-PA 120 | PA120 SE | PA120 SE 1700-d6 | not specified | BA120 ARGB-D1 | PA120 MINI BLACK | PA120SE-D3-A |
If you are building the full system, consider the best thermalright case fans for CPU Cooler to ensure proper airflow.
Frequently asked questions
Which alternative works best for compact cases with limited height?
You should choose the Thermalright Peerless Assassin 120 Mini Black if your computer case has height limitations. This cooler measures only 135mm tall while still providing six heat pipes and a 120mm PWM fan. Its reduced vertical footprint lets you fit dual-tower thermal hardware into smaller enclosures without sacrificing socket support for platforms like AM5 and LGA 1851.
Is there a single-tower alternative available on this list?
Yes, the Thermalright Burst Assassin 120 ARGB is the single-tower alternative featured on this list. It uses a narrower heatsink measuring two inches in width and delivers 66.17 CFM of airflow. You get six heat pipes alongside integrated ARGB lighting, making it a practical option if you want to preserve interior clearance inside your mid-tower chassis.
Do these alternative coolers support the newer Intel LGA 1851 socket?
Yes, all 6 alternatives on this list explicitly support the Intel LGA 1851 socket. Whether you select the twin-tower Thermalright Peerless Assassin 120 SE or the compact Mini Black model, each option includes mounting compatibility for LGA 1851. You can install these coolers on current generation Intel motherboards as well as older interfaces like LGA 1700 and LGA 1200.
Does the Thermalright Peerless Assassin 120 Mini Black fit Intel LGA 1700 motherboards?
Based on published specifications, the Thermalright Peerless Assassin 120 Mini Black does not list support for Intel LGA 1700. Its documented Intel socket compatibility includes LGA 1851, LGA 1200, LGA 1150, and LGA 1151. If you run an LGA 1700 processor, you should select one of the other alternatives like the Peerless Assassin 120 SE Dual Tower instead.
What hardware do you need to mount these coolers to AMD motherboards?
You need your motherboard's original AMD factory backplate to install several of these dual-tower models. Both the Thermalright Peerless Assassin 120 CPU Cooler and the SE Aluminum Cooler specify that your chassis build must retain the factory AMD backplate for mounting. Retaining this stock part ensures secure contact with your AM4 or AM5 processor before you secure the six heat pipes.
How many heat pipes do these Thermalright alternatives typically feature?
Every alternative featured on this list comes equipped with six heat pipes for thermal dissipation. Whether you select a dual-fan model like the Peerless Assassin 120 SE or the single-tower Burst Assassin 120 ARGB, each heatsink utilizes six pipes. This design routes heat directly from your CPU base across the aluminum fin array for dependable cooling performance in your desktop PC.
Which alternative option includes integrated ARGB lighting?
You should pick the Thermalright Burst Assassin 120 ARGB if you want built-in lighting hardware. Unlike the standard non-illuminated dual-tower options in this guide, this model pairs ARGB illumination with a 154mm single-tower heatsink and a high-flow fan rated at 66.17 CFM. It offers distinctive visual customization while maintaining six heat pipes for efficient heat transfer across multiple Intel and AMD sockets.