Thermalright Assassin X 120 RGB CPU Cooler Review: Who It Fits and Who Should Skip It
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This thermalright assassin x 120r se v2 CPU cooler review focuses on a single-tower air solution designed for mainstream builds. It features a 120mm fan and four 6mm heat pipes. The cooler stands 148mm tall, allowing it to fit most mid-size cases without blocking memory. The included fan runs at 1550 RPM. This setup provides a balance of cooling performance and low noise levels. You get RGB lighting through a shared interface. The design uses a pure copper base for direct heat transfer.
What stands out
- Four 6mm heat pipes transfer heat from the pure copper base.
- 120mm PWM fan reaches 1550 RPM with 66.17 CFM airflow.
- 148mm height fits most cases without blocking RAM slots.
- S-FDB bearings reduce fan noise and extend component life.
Who it fits
Good fit for
This cooler suits users with AM4, AM5, LGA1700, or LGA1851 processors who need reliable cooling without excessive bulk. The 148mm height makes it ideal for standard ATX or micro-ATX cases. If you want RGB lighting without managing separate cables, the shared interface is convenient. The low noise level of 25.6 dB is good for quiet office or home setups. It is a practical choice for builders who prioritize compatibility and straightforward installation over extreme overclocking headroom.
Who should skip it
You should look elsewhere if your case has a strict CPU cooler height limit below 148mm. The single 120mm fan may struggle with high-end, power-hungry chips that generate significant heat. If you require dual-tower performance for heavy workloads, this single-fan design is insufficient. Users needing extensive fan control software will find the PWM control limited to motherboard headers. Additionally, if you prefer a low-profile design for small form-factor builds, this unit is too tall.
Verdict: The Thermalright Assassin X 120 RGB is a solid, spec-driven choice for mainstream cooling needs. It offers good compatibility and quiet operation for standard desktop builds.
Key specs explained for this cooler
Fan Size: 120mm
This standard fan size balances airflow and noise well. You get efficient heat transfer without excessive bulk. It fits most cases and motherboards. When shopping, compare this to 140mm fans for more airflow or 92mm fans for lower profiles. A 120mm fan is a safe choice for mainstream builds.
Heat Pipes: 4
Four 6mm copper heat pipes move heat from the base to the fins. This setup handles mainstream CPU loads effectively. More pipes usually mean better cooling capacity. When comparing air coolers, check if the count matches your CPU’s thermal output. This count suits typical desktop processors.
Cooler Height: 148mm
This height allows the cooler to fit inside most mid-tower cases. It avoids blocking tall RAM sticks. You can install it without worrying about case clearance issues. When shopping, measure your case’s max cooler height. This spec ensures compatibility with standard builds and common memory modules.
Fan Speed: 1550 RPM
This speed indicates how fast the fan blades spin. Higher RPMs generally increase airflow but also noise. This level offers a balance for quiet operation. When comparing fans, look at the RPM alongside noise ratings. This speed supports steady cooling without loud disturbances during use.
Lighting: RGB
RGB lighting lets you customize the cooler’s appearance. You can match your build’s color scheme. It adds visual appeal to your case interior. When shopping, check if your motherboard supports RGB control. This feature is purely aesthetic and does not affect cooling performance.
Design and build quality
The listing describes a single-tower layout with a pure copper base and four 6mm heat pipes. This configuration directs heat from the processor into the aluminum fins efficiently. The cooler measures 148mm in height. This specific dimension ensures it clears most standard memory modules in mid-size cases. The overall dimensions are 120mm by 71mm by 148mm. The unit weighs 3.53 ounces, keeping the load on the motherboard socket low.
The fan model is the TL-C12C-L V2, a 120mm PWM unit with S-FDB bearings. According to the listing, these bearings reduce blade shaking and extend fan life. The fan speed reaches 1550 RPM, moving up to 66.17 CFM of air. Noise levels stay at or below 25.6 dB(A). This balance allows for quiet operation while maintaining cooling performance. The fan uses a standard 4-pin power port.
The heatsink and fan frame use industrial-strength PBT and PC materials with UL class A safety insulation. RGB lighting is included, sharing a single interface for power and illumination. This simplifies cabling for your build. The cooler includes metal fasteners for both Intel and AMD platforms. It supports sockets like LGA 1700, LGA 1851, AM4, and AM5. This broad compatibility makes it a versatile choice for various recent systems.
Setup and everyday use guide
Installation relies on the included metal fasteners for both Intel and AMD platforms. You will need to match the mounting hardware to your specific socket. The listing confirms support for LGA 1150, 1151, 1155, 1156, 1200, 1700, 17XX, and 1851 on Intel systems. For AMD, it covers AM4 and AM5 sockets. You should follow the provided installation video or instructions to ensure correct placement. The 148mm height is a practical dimension for most medium-sized cases. This clearance prevents interference with memory modules during installation. You can install RAM without removing the cooler. The fan connects via a standard 4-pin PWM port. It operates at 12 volts with a maximum speed of 1550 RPM. This speed delivers up to 66.17 CFM of airflow. The noise level stays at or below 25.6 dBA during operation. The S-FDB bearing design aims to reduce blade shake and extend fan life. Lighting setup is straightforward. The fan’s power and RGB interfaces share a single connector. Plugging it in activates the illumination immediately. You do not need separate cables for lighting. The cooler’s compact footprint allows it to fit in tight spaces. It does not block adjacent components. The build uses PBT and PC materials for durability. This setup process is designed for standard desktop builds. You get efficient cooling with minimal complexity during daily use.
Before You Buy This Cooler
You need to verify your case clearance before purchasing. The 148mm height fits most mid-size towers, but you must measure your specific chassis to ensure the cooler does not interfere with side panels or RAM slots. This unit includes mounting hardware for Intel LGA 1700 and 1851, as well as AMD AM4 and AM5 sockets. You should confirm your motherboard supports these platforms. The single 120mm fan provides adequate airflow for mainstream processors, but it may struggle with high-end chips under heavy load. If you plan to overclock significantly, consider a dual-tower model or a larger 140mm fan for better thermal headroom. Regular maintenance involves wiping dust from the aluminum fins every few months to maintain efficiency. This cooler sits in the budget-friendly segment, offering solid value for standard builds without demanding excessive space or power.
Check before you buy
- Measure your case height to ensure the 148mm cooler fits.
- Confirm your CPU socket is AM4, AM5, LGA 1700, or LGA 1851.
- Check RAM clearance if you use tall memory modules.
- Verify your motherboard has a 4-pin PWM header for the fan.
The product at a glance
Thermalright Assassin X 120 RGB CPU Cooler
Best for: Standard mid-tower PC builds
- Socket Compatibility
- AM4, AM5, LGA1700, LGA1851, LGA1200
- Cooler Height
- 148mm
- Heat Pipes
- 4
- Fan Size
- 120mm
- Fan Speed
- 1550 RPM
- Lighting
- RGB
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The Thermalright Assassin X 120 RGB SE V2 is a single 120mm air cooler designed for standard ATX cases. It features a pure copper base, four 6mm heat pipes, and a 120mm PWM fan running at 1550 RPM. The cooler stands 148mm tall, ensuring it fits most medium-sized cases without blocking memory. It supports modern Intel and AMD sockets, offering reliable cooling performance for everyday computing tasks.
Pros
- Four 6mm heat pipes for efficient heat transfer
- 120mm PWM fan with 66.17 CFM airflow
- S-FDB bearings for reduced noise and longer life
- RGB lighting with shared power and lighting interface
- 148mm height compatible with many standard cases
Cons
- Single 120mm fan limits cooling capacity for high-end CPUs
- 148mm height may not fit in small form factor cases
- No software control for RGB or fan speed mentioned
Good fit if
- You need a quiet cooler for standard office or gaming PCs
- You have a mid-tower case with at least 148mm clearance
- You want RGB lighting without complex setup
Skip if
- You use a high-TDP CPU requiring dual-tower cooling
- Your case has less than 148mm CPU cooler clearance
- You need precise fan speed control via software
Verdict: Thermalright Assassin X 120 RGB is a practical choice for users with mid-tower cases and standard CPUs. It delivers solid cooling and quiet operation for everyday builds.
Specifications side by side
| Spec | Thermalright Assassin X 120 RGB CPU Cooler |
|---|---|
| Socket Compatibility | AM4, AM5, LGA1700, LGA1851, LGA1200 |
| Cooler Height | 148mm |
| Heat Pipes | 4 |
| Fan Size | 120mm |
| Fan Speed | 1550 RPM |
| Lighting | RGB |
| Features | Fan |
| Dimensions | 4.92 × 2.8 × 5.83 inches |
| Weight | 3.53 ounces |
| Model | AX120 SE V2 |
Frequently asked questions
Does the Thermalright Assassin X 120 RGB support the latest AMD AM5 socket?
Yes, it supports the AM5 socket. The product data lists AM5 as one of its compatible sockets. You can install this cooler on modern AMD Ryzen processors without needing separate mounting hardware for the new platform.
Will this cooler fit in a standard mid-tower PC case?
It is designed for standard mid-tower builds. The cooler is 5.83 inches tall, which allows it to clear most RAM modules in typical mid-size chassis. You should verify your specific case clearance to ensure the side panel closes properly.
How many heat pipes does the Assassin X 120 SE V2 have?
It features four heat pipes. These pipes help transfer heat from the CPU base to the aluminum fins efficiently. This configuration is standard for single-tower coolers in this class, providing balanced thermal performance for everyday computing tasks.
Is RGB lighting included on this CPU cooler?
Yes, it includes RGB lighting. The product attributes explicitly list RGB as a feature. You can customize the lighting effects to match your system aesthetic, adding visual appeal to your build without compromising its practical cooling capabilities.
Does this model come with a fan included?
Yes, the fan is included. The attributes list specifies a fan as part of the package. You do not need to purchase a separate 120mm fan to operate this cooler. The integrated fan works directly with the heatsink to dissipate heat.
Is this cooler suitable for Intel LGA 1851 motherboards?
Yes, it supports LGA 1851. The socket compatibility list includes LGA 1851 alongside other Intel platforms. You can mount this cooler on the latest Intel 14th Gen or newer processors that use this socket type without issue.
How heavy is the Thermalright Assassin X 120 RGB?
It weighs 3.53 ounces. This lightweight design reduces stress on your motherboard socket. The low weight is typical for single-tower air coolers and makes installation easier, especially if you are building your PC for the first time.