Thermalright Assassin King 120 5-Heatpipe Review: Who It Fits and Who Should Skip It
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This thermalright assassin king 120 se review covers a single-tower air cooler designed for modern desktop builds. It features five pure copper heat pipes and a 120mm PWM fan running at 1550 RPM. The unit stands 148 mm tall, making it suitable for medium-sized cases. It uses AGHP III technology to manage heat pipe orientation. The cooler supports both Intel LGA 1700 and AMD AM5 sockets. We break down how these specifications translate to real-world performance and compatibility for your next build.
What stands out
- Five 6mm pure copper heat pipes with AGHP III technique
- 120mm TL-C12C PWM fan reaching 1550 RPM for 66.17 CFM airflow
- 148 mm height fits medium-sized computer cases
- Supports Intel LGA 1700/1851 and AMD AM4/AM5 sockets
- S-FDB bearings rated for up to 20,000 hours of service life
Who it fits
Good fit for
You should consider this cooler if you have a medium-sized case with at least 148 mm of clearance. It is a solid choice for users on AM5 or LGA 1700 platforms who need reliable cooling without the bulk of a dual-tower design. The five heat pipes and 120mm fan provide efficient heat dissipation for standard desktop workloads. If you prefer a quiet operation with noise levels under 25.6 dB, this single-tower solution offers a practical balance of cooling performance and acoustic comfort for your daily computing needs.
Who should skip it
You should look elsewhere if your case has less than 148 mm of CPU cooler clearance. The single-tower design may struggle with high-end processors that generate significant heat under heavy loads. If you require RGB lighting effects, note that this specific SE model does not include ARGB features, though other color options exist. Additionally, if you need support for older Intel sockets like LGA 1150 or 1155, verify that your motherboard layout allows for the included mounting hardware, as the focus here is on modern platforms.
Verdict: This single-tower cooler offers practical cooling for modern sockets with a 148 mm height limit. It suits medium cases and standard desktop workloads well.
Key specs explained
5 Heat Pipes
This cooler uses five pure copper heat pipes to move heat from the CPU base to the aluminum fins. The data notes these pipes apply AGHP III technique to manage gravity effects in different orientations. This design helps maintain consistent cooling performance whether your case is on a desk or mounted vertically. It is a standard configuration for efficient single-tower air coolers.
120mm Fan
The unit includes a single 120mm PWM fan. This is the standard size for many mid-tower cases, ensuring broad compatibility. A 120mm fan moves a moderate amount of air while balancing noise levels. You can adjust the speed via your motherboard. This size is common in the market, making replacement or upgrades straightforward if you need more airflow later.
148 mm Height
The cooler stands 148 mm tall. This dimension determines whether it fits inside your computer case without hitting RAM sticks or side panels. The data states this height is suitable for medium-sized cases. If you have low-profile memory or a compact case, you must check your clearance. Taller coolers often offer better performance but require more internal space.
LGA 1700, AM5
The cooler supports modern sockets like Intel LGA 1700 and AMD AM5. This ensures it works with recent processors from both major manufacturers. The data lists compatibility with LGA 1150/1151/1155/1156/1200/1851 and AM4 as well. This wide range means you can use this cooler across multiple generations of desktop hardware without needing a new mount.
Design and build details
The listing describes a single-tower layout with a 148 mm height. This dimension fits medium-sized cases, though you must verify clearance against your specific chassis. The heatsink combines an aluminum fin stack with a pure copper base. Five pure copper heat pipes connect the base to the fins. These pipes use AGHP III technique to mitigate gravity effects in vertical or horizontal positions. This ensures consistent heat transfer regardless of how the cooler sits inside your case.
The unit weighs 1.4 pounds according to the listing. The dimensions are 120 mm wide, 73 mm deep, and 148 mm tall. It includes a 120 mm PWM fan with a 25 mm thickness. The fan runs at 1550 RPM and connects via a 4-pin header. This allows your motherboard to control speed based on thermal load. The fan generates up to 66.17 CFM of airflow while staying under 25.6 dB of noise.
The cooler supports Intel LGA 1700 and AMD AM5 sockets, along with older platforms like LGA 1200 and AM4. Metal fasteners are included for these mounts. The construction uses industrial PBT and PC materials for the fan frame. This suggests a focus on durability and safety insulation. The design prioritizes functional cooling over aesthetic features, making it a practical choice for standard builds.
Setup And Everyday Use
Installation relies on the included metal fasteners for Intel and AMD platforms. You must match the hardware to your specific socket type. The listing confirms support for LGA 1150, 1151, 1155, 1156, 1200, 1700, and 1851. It also covers AM4 and AM5 sockets. For each platform, the manufacturer provides the corresponding mounting plate or fastener parts. This ensures a secure fit without requiring third-party adapters. The unit weighs 0.8 kg, which is manageable for standard mounting procedures.
In daily use, the cooler connects via a 4-pin PWM port. You can control the fan speed through your motherboard software. The TL-C12C fan runs at 1550 RPM, with a tolerance of plus or minus 10 percent. It delivers up to 66.17 CFM of airflow. The noise level stays at or below 25.6 dB(A). This combination aims to provide efficient cooling while maintaining a quiet environment. The fan operates on 12V power.
The heat pipes use AGHP III technique to solve inverse gravity effects. This allows the cooler to function effectively in both vertical and horizontal orientations. The S-FDB bearings are rated for up to 20,000 hours of industrial service life. The materials include UL class A safety insulation and industrial PBT plus PC components. This design prioritizes long-term reliability. You get a single-tower solution that fits well in standard mid-size cases. The 148 mm height is the key constraint to check before purchase.
What You Need To Know Before Buying
This single-tower cooler fits well if you prioritize case compatibility over extreme overclocking potential. You must verify that your chassis allows at least 148 mm of height for the heatsink and 25 mm for the fan depth. The included mounting hardware covers most modern Intel and AMD sockets, so you likely do not need extra adapters. Since the fan runs at 1550 RPM, it offers decent airflow while staying relatively quiet, making it a practical choice for standard desktop use. It sits in the mid-range of air coolers, offering better performance than basic stock units but less capacity than dual-tower designs. Regular maintenance involves dusting the aluminum fins with compressed air every few months to maintain efficiency. Ensure your RAM modules do not interfere with the fan blades, as the 120 mm fan sits close to the socket area.
Check before you buy
- Verify your case supports 148 mm heatsink height.
- Check RAM clearance against the 120 mm fan.
- Confirm your CPU socket matches the included fasteners.
- Ensure your motherboard has a 4-pin PWM header.
The product at a glance
Thermalright Assassin King 120 5-Heatpipe Cooler
Best for: Medium cases with moderate CPU cooling needs
- Socket Compatibility
- LGA 1700, 1851, 1200, AM4, AM5
- Cooler Height
- 148 mm
- Heat Pipes
- 5
- Tower Design
- Single-Tower
- Fan Size
- 120mm
- Fan Speed
- 1550 RPM
View on Amazon: Thermalright Assassin King 120 5-Heatpipe Cooler Affiliate link
The Thermalright AK120 SE is a single-tower air cooler featuring five pure copper heat pipes and a 120mm PWM fan. It reaches 1550 RPM for 66.17 CFM airflow while staying under 25.6 dB. The 148mm height fits medium cases. It supports modern Intel and AMD sockets. This cooler offers efficient cooling for users who need quiet operation and broad compatibility without excessive bulk.
Pros
- Five 6mm pure copper heat pipes with AGHP III technology
- 120mm PWM fan delivers up to 66.17 CFM airflow
- Noise level stays at or below 25.6 dB(A)
- Supports Intel LGA 1700/1851 and AMD AM4/AM5 sockets
- S-FDB bearings provide up to 20,000 hours of service life
Cons
- Single-tower design limits cooling capacity for high-end CPUs
- 148mm height may not fit in small form factor cases
- Fan speed is capped at 1550 RPM for lower airflow potential
Good fit if
- You have a medium-sized computer case with at least 148mm clearance
- You use an Intel or AMD CPU that does not require extreme cooling
- You prioritize low noise levels under 26 dB during operation
Skip if
- You need to cool a high-wattage enthusiast processor
- Your computer case has a cooler height limit below 148mm
- You require RGB lighting or software control for the fan
Verdict: The Thermalright AK120 SE Single-Tower Cooler fits users with medium cases and moderate CPU power needs who value quiet operation. It is not suitable for high-performance builds or tight spaces.
Specifications side by side
| Spec | Thermalright Assassin King 120 5-Heatpipe Cooler |
|---|---|
| Socket Compatibility | LGA 1700, 1851, 1200, AM4, AM5 |
| Cooler Height | 148 mm |
| Heat Pipes | 5 |
| Tower Design | Single-Tower |
| Fan Size | 120mm |
| Fan Speed | 1550 RPM |
| Features | Fan |
| Dimensions | 5.83 × 4.92 × 2.87 inches |
| Weight | 1.4 pounds |
| Size | 4 Heatpies |
| Color | AK120SE |
| Model | AK120 SE |
Frequently asked questions
Is the Thermalright Assassin King 120 SE good for quiet operation?
Yes, it is designed for users who value quiet operation. The cooler includes a PWM fan that runs at 1550 RPM. This speed helps keep noise levels low during standard tasks. It fits users with moderate CPU power needs who prioritize silence over extreme cooling performance.
Does this cooler fit in small ITX cases?
No, it is not suitable for tight spaces. The heatsink stands 148 mm tall and weighs 1.4 pounds. You must verify that your chassis allows at least 148 mm of height clearance. It is better suited for medium-sized cases where space is less constrained.
What sockets does the Thermalright AK120 SE support?
It supports a wide range of modern sockets. The data confirms compatibility with AM4, AM5, LGA 1851, LGA 1700, LGA 1200, LGA 1150, and LGA 1151. You must match the included metal fasteners to your specific socket type for proper installation on either Intel or AMD platforms.
How many heat pipes are in this cooler?
This cooler features five pure copper heat pipes. These pipes use AGHP III technique to manage gravity effects in different orientations. This design helps move heat from the CPU base to the aluminum fins efficiently, maintaining performance regardless of how the case is positioned.
Can I use this cooler for heavy overclocking?
No, it is not suitable for high-performance builds. The verdict states it fits users with moderate CPU power needs. If you plan to push your CPU beyond stock settings significantly, you should look for a larger dual-tower cooler. This single-tower unit is best for standard usage.
What are the physical dimensions of the AK120 SE?
The unit measures 4.92 inches in width, 5.83 inches in length, and 2.87 inches in height. The fan depth adds to the total height requirement. You need to check these dimensions against your case specifications to ensure the fan does not interfere with RAM or side panels.
Does it come with a fan included?
Yes, the product attributes list a fan as a key feature. The review notes it includes a 120mm PWM fan running at 1550 RPM. You do not need to purchase a separate fan for basic operation, as the unit is designed as a complete cooling solution for standard builds.