Thermalright Peerless Assassin 120 SE Review: Who It Fits and Who Should Skip It
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This thermalright thermalrlght peerless assassin 120 review focuses on the PA120 SE ARGB. It is a dual-tower CPU air cooler with six heat pipes. The unit measures 155mm in height and includes two 120mm fans. These fans reach 1550 RPM and produce 66.17 CFM of airflow. The cooler uses soldered heat pipes for stable performance. It supports major Intel and AMD sockets. The design includes an offset layout for better component clearance. You get ARGB lighting and a nickel-plated finish. This guide explains what these specs mean for your build.
What stands out
- Dual-tower design with six 6mm AGHP heat pipes
- 155mm height fits most mid-tower cases
- 120mm PWM fans at 1550 RPM with ARGB
- Supports AM4, AM5, LGA1700, and LGA1851 sockets
Who it fits
Good fit for
You should buy this if you need strong cooling for mid-range CPUs. The dual-tower design and six heat pipes handle decent thermal loads. The 155mm height allows installation in most standard cases. The offset layout helps avoid interference with tall RAM sticks. It works well with AM4 and AM5 motherboards. The included ARGB adds visual appeal without complex software. If you want a straightforward cooler with good specs, this fits your needs.
Who should skip it
Skip this if your case has a strict height limit under 155mm. The dual-tower design is wide, so check your motherboard clearance. The fans are fixed at 120mm, so you cannot upgrade to 140mm for lower noise. It requires a 4-pin PWM header for fan control. The ARGB connection needs a compatible motherboard header. If you have a very small form factor case, this cooler will not fit. Look for a single-tower model if space is tight.
Verdict: The Thermalright Peerless Assassin 120 SE ARGB offers solid dual-tower cooling for standard ATX builds. It suits users who need reliable performance and ARGB lighting without excessive height.
Key specs explained
Dual-Tower Design with 6 Heat Pipes
This configuration uses two aluminum fins stacks and six copper pipes to move heat away from the processor. The dual-tower layout increases surface area for dissipation, while the heat pipes transfer thermal energy efficiently from the base to the fins. You benefit from stable cooling under load. When shopping, compare this density against single-tower models to ensure your case has enough vertical clearance for both the cooler and the fans.
120mm PWM Fans at 1550 RPM
These standard-sized fans spin at a maximum speed of 1550 RPM to push air through the fins. The PWM signal allows your motherboard to adjust the speed automatically based on CPU temperature. This balance helps maintain airflow without unnecessary noise during idle periods. When comparing air coolers, check if the fan speed offers sufficient pressure for dense fin stacks, as lower speeds may struggle with thermal resistance.
Cooler Height of 155mm
The total vertical dimension of the cooler and fans is 155mm. This measurement is critical for determining if the unit fits inside your computer case. You must measure the space above the RAM slots and ensure the side panel closes properly. When shopping, verify your case specifications against this height, as taller coolers may interfere with memory modules or case side panels.
ARGB Lighting Support
The unit includes addressable RGB LEDs for customizable color effects. This feature allows you to sync the cooler’s appearance with other compatible components in your build. The lighting does not impact cooling performance but adds aesthetic value. When comparing options, note that ARGB requires a specific header on your motherboard for control, distinct from standard RGB connections, so check your board’s connectivity before purchasing.
Design and build details
The listing describes a dual-tower heatsink constructed from aluminum fins. It uses six 6mm pure copper heat pipes with an AGHP technique. This design aims to solve gravity effects in vertical or horizontal orientations. The base is pure copper with a soldered connection to the pipes. The top cover features an anodized brushed black finish. Nickel-plating covers the heat pipes for corrosion resistance. According to the listing, these materials support stable performance output and a durable look.
The unit measures 125mm in length, 135mm in width, and 155mm in height. This height can restrict compatibility with tall RAM modules or large cases. The fans are 120mm PWM models with a maximum speed of 1550 RPM. They provide 66.17 CFM of airflow at a noise level of 25.6 dB(A). The fans leave room for memory chips, which helps with installation flexibility. The cooler includes metal fasteners for Intel and AMD platforms.
Socket support covers LGA1700, LGA1200, LGA1851, AM4, and AM5. The asymmetric layout is designed to improve graphics card clearance. You must check your case dimensions before buying. The ARGB lighting adds visual effects but does not change cooling specs. The build focuses on efficient heat transfer and broad platform support. This design suits users who need strong airflow without excessive height.
Setup and everyday use
Installation requires matching the included metal fasteners to your specific CPU socket. The listing confirms support for Intel LGA1150, 1151, 1155, 1156, 1200, 1700, and 17XX, as well as AMD AM4 and AM5. For AMD platforms, you must use the original motherboard backplane, which is not included in the box. You should verify your case and motherboard compatibility before purchasing, given the cooler’s height of 155mm. The heatsink features an offset asymmetric layout, which helps avoid interference with graphics cards and other components on the motherboard. This design choice also leaves room for memory chips, allowing for unrestricted RAM installation in many configurations. The unit connects via a standard 4-pin PWM port. This allows your system to adjust fan speed based on thermal load. The fans operate at 1550 RPM with a noise level of 25.6 dB(A). This specification suggests quiet operation during standard tasks. The ARGB lighting connects to your motherboard for synchronized effects. The dual-tower design and six heat pipes move heat efficiently. You do not need to adjust the cooler orientation frequently, as the AGHP technique addresses gravity effects. Daily use involves standard fan curve management through your BIOS or software. The cooler’s dimensions are 125mm by 135mm by 155mm. Ensure your case supports this size for proper airflow. The build uses nickel-plated heat pipes and an anodized black top cover for durability and aesthetics.
Before You Buy This Cooler
Before purchasing the Thermalright Peerless Assassin 120 SE ARGB, you must verify case compatibility. The cooler stands 155mm tall. This height may interfere with tall RAM modules or side-panel clearance in smaller cases. The listing explicitly advises checking your case dimensions before buying. You also need to ensure your motherboard supports the included mounting hardware for Intel LGA1700 or AMD AM5 sockets. For AMD, you must use the motherboard’s original backplate, which is not included. Upkeep is minimal. The aluminum fins and copper pipes require occasional dust removal to maintain the stated 66.17 CFM airflow. This model fits well among 1 other air coolers by offering strong dual-tower performance without excessive height. It suits users who prioritize cooling efficiency over extreme RGB customization, provided their chassis can accommodate the 155mm profile.
Check before you buy
- Measure your case height to ensure 155mm clearance.
- Check RAM height for interference with the dual towers.
- Confirm your motherboard supports the included metal fasteners.
- Verify AMD users have the original backplate available.
- Ensure side-panel clearance for the 135mm width.
The product at a glance
Thermalright Peerless Assassin 120 SE ARGB Cooler
Best for: AM5 and LGA1700 builds with standard case clearance
- 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 ARGB Cooler Affiliate link
This dual-tower air cooler uses six 6mm heat pipes with AGHP technology to manage heat effectively in any orientation. The soldered base and nickel-plated pipes improve stability. It includes two 120mm PWM fans that reach 1550 RPM while staying under 25.6 dB. The 155mm height and offset design help fit most cases and motherboards. ARGB lighting adds visual appeal for your build.
Pros
- Six 6mm heat pipes use AGHP technique to prevent inverse gravity effects.
- Dual 120mm PWM fans provide up to 66.17 CFM airflow.
- Soldered base and nickel-plated pipes ensure stable performance.
- Offset asymmetric layout improves graphics card compatibility.
- Supports AM4, AM5, LGA1700, and LGA1200 sockets.
Cons
- 155mm height may not fit all small form factor cases.
- AMD installation requires the motherboard's original backplate, which is not included.
- Fans are limited to 1550 RPM maximum speed.
Good fit if
- You need a dual-tower cooler for AM5 or LGA1700 platforms.
- You want ARGB lighting synchronized with your system.
- You have a mid-tower case with sufficient clearance.
Skip if
- You are building in a case with less than 155mm CPU cooler clearance.
- You prefer a single-tower design for compact builds.
- You need included mounting hardware for AMD motherboards.
Verdict: Thermalright Peerless Assassin 120 SE ARGB fits users with standard mid-tower cases who want reliable dual-tower cooling and ARGB lighting. It is a solid choice for AM5 and LGA1700 builds where space allows.
Specifications side by side
| Spec | Thermalright Peerless Assassin 120 SE ARGB Cooler |
|---|---|
| Socket Compatibility | AM4, AM5, LGA1851, LGA1700, LGA1200 |
| Cooler Height | 155mm |
| Heat Pipes | 6 |
| Tower Design | Dual-Tower |
| Fan Size | 120mm |
| Fan Speed | 1550 RPM |
| Lighting | ARGB |
| Material | Aluminum |
| Features | Fan |
| Dimensions | 4.92 × 5.31 × 6.1 inches |
| Model | PA120 SE ARGB-D3-A |
Frequently asked questions
Is the Thermalright Peerless Assassin 120 SE ARGB compatible with AM5?
Yes, this cooler supports AMD AM5 sockets. The product data lists AM5 as a confirmed socket compatibility option. It also works with LGA1851, LGA1200, and AM4. This makes it a versatile choice for modern and older platforms. You should verify your specific socket type before installation.
Does this cooler include ARGB lighting?
Yes, the Thermalright Peerless Assassin 120 SE ARGB includes ARGB lighting. The attributes section explicitly lists ARGB as a feature. This allows you to sync the lighting with your motherboard. The dual-tower design houses these LEDs within the aluminum fin stacks for visual appeal.
What is the maximum height clearance required for this cooler?
You need at least 155mm of case clearance for this unit. The specs list the height as 6.1 inches, which converts to approximately 155mm. This is a critical measurement for mid-tower cases. Ensure your case supports this height to avoid side-panel interference during installation.
How many heat pipes does the Peerless Assassin 120 SE have?
The cooler features six heat pipes. These pipes are made of pure copper and use AGHP technology to manage gravity effects. They transfer heat efficiently from the copper base to the aluminum fins. This six-pipe configuration is central to its dual-tower cooling performance.
Is the Thermalright Peerless Assassin 120 SE suitable for LGA1700?
Yes, it is suitable for Intel LGA1700. The socket compatibility list includes LGA1700 alongside LGA1851 and LGA1200. The mounting hardware supports these Intel sockets. It is considered a solid choice for LGA1700 builds where standard case clearance allows for its dual-tower design.
What material is the heatsink made of?
The heatsink fins are constructed from aluminum. The base is made of pure copper. This combination uses aluminum for lightweight heat dissipation and copper for efficient thermal transfer. The six heat pipes are also pure copper, ensuring effective heat movement from the processor to the fins.
Does this model come with fans included?
Yes, the unit includes fans. The attributes section lists 'Fan' as a feature. The review mentions it includes two 120mm fans that reach 1550 RPM. These fans provide airflow to cool the dual-tower aluminum fins. You do not need to purchase additional fans for basic operation.
Can this cooler fit in a standard mid-tower case?
Yes, it fits standard mid-tower cases with sufficient clearance. The verdict states it fits users with standard mid-tower cases. However, you must check the 155mm height constraint. Tall RAM modules or case side panels may interfere. Always verify your specific case dimensions before relying on this fitment.