

❄️ Peerless Cooling, Unmatched Silence — Dominate Your Build!
The Thermalright Peerless Assassin 120 SE is a high-performance air CPU cooler featuring 6 advanced copper heat pipes with AGHP technology, dual 120mm PWM fans delivering up to 66.17 CFM airflow at a quiet ≤25.6 dB noise level. Designed for broad compatibility with Intel LGA 115x/1200/1700 and AMD AM4/AM5 sockets, it offers a compact 155mm height for easy installation and excellent RAM clearance. This cooler balances premium cooling efficiency and whisper-quiet operation at a budget-friendly price, making it a top choice for professional and enthusiast PC builders.












| ASIN | B09LGY38L4 |
| Air Flow Capacity | 66.17 Cubic Feet Per Minute |
| Best Sellers Rank | #1 in Computer CPU Cooling Fans |
| Brand | Thermalright |
| Brand Name | Thermalright |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.7 out of 5 stars 4,954 Reviews |
| Item Dimensions L x W x H | 4.92"L x 5.31"W x 6.1"H |
| Item Weight | 2 Pounds |
| Manufacturer | THERMALRIGHT |
| Material Type | Aluminium,Aluminum,Metal,Silicone |
| Maximum Rotational Speed | 1550 RPM |
| Noise Level | 25.6 Decibels |
| Power Connector Type | 4-Pin |
| Product Dimensions | 4.92"L x 5.31"W x 6.1"H |
| UPC | 717378790852 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Wattage | 265 watts |
J**K
Great quality, great price.
I have purchased 2 of these so far for different builds. They work and look great. Great build quality and good thermals. Granted, I hardly ever max out one of my CPUs, but it keeps my 12900k cool without issue. My other CPU is less powerful but it gets ran at 100% regularly and also doesn't have cooling problems. As long as this fits in your case, I'd recommend it to anyone looking for a solid, but still budget friendly, air cooler.
P**N
Unbeatable value: performance air cooling at a budget price
I recently installed the Peerless Assassin 120 SE ARGB in my build and I’m extremely pleased with the results. A few highlight points: With 6 heat-pipes and a dual-tower heatsink, this cooler handles high thermal loads surprisingly well for the price. It supports both Intel (LGA 115x/1200/1700) and AMD (AM4/AM5) sockets out of the box — easy to integrate into different systems. It is impressively quiet. According to the official spec the noise level tops out at ~25.6 dBA, which means minimal fan noise in daily use. The ARGB lighting is a nice bonus for anyone who cares about aesthetics, and it does not seem to compromise performance. My experience in use: Installation was straightforward (with the back-plate and mounting brackets included). After setup I noticed lower idle and load temperatures vs the stock cooler, and the system remained quiet even under sustained load. It also had good clearance around my RAM slots and GPU (always good to check fit in your case). In terms of value vs performance, this cooler really stands out. Minor note: You’ll want to check your case’s CPU cooler clearance, the heatsink is ~155mm tall. Also, if you’re doing extreme overclocking or very high-end CPUs at 300 W+ loads, this may not quite match the very top-tier 280/360mm liquid-coolers, but for most builds it gives excellent bang for the buck. Bottom line: If you’re looking for a high-performance air cooler that doesn’t break the bank, the Peerless Assassin 120 SE ARGB is hard to beat. Highly recommended.
T**O
Feeling of quality
The product looks and feels high quality. Installation is slightly tricky, especially when attaching the adapter, particularly if you've never done it before, as was my case. However, it's not impossible with patience and by following the included manual, which, although brief, serves as a guide. If you still have questions, the video uploaded for the product clearly demonstrates the installation process. It completely met my need to maintain better CPU temperatures. Previously, my CPU reached temperatures of 60°C/140°F at idle and over 77°C/170.6°F while gaming with the stock AMD fan. Now, with this cooling tower, I've reduced temperatures by approximately 20°C/68°F for both processes. This is most noticeable in gaming, as the temperature never exceeded 57°C/134.6°F, even though summers in my country are hot. At the time of testing, the ambient temperature was around 40°C/104°F. As I said, I'm completely satisfied with the product because it fulfills all its promises well at a reasonable price.
F**H
Keeps my Ryzen 9 9900x cool.
I was skeptical, but this cooler is keeping my Ryzen 9 9900X cool. It is operating within normal temperature ranges. At max load it hit 170f (76c). Max temp for my processor is 203f (95c), so plenty of room. Installation was simple enough, use the included mounting hardware for your processor, apply paste, mount the heatsink, then clip the fans on the heatsink. What I really liked was not having to use screws with the fans. What isn't apparent until you look closer at the diagram is that one fan goes between the heatsinks and the other on the right side. Both fans point to the rear across the heatsinks (see the diagram as it is clear) where the hot air is pulled out by the rear case fan(s). The unit fits exactly as it should on the motherboard. The fans are quiet and do the job. The paste being used is Corsair XTM60, which I've had good results with both on other CPU and GPU (I repasted my old GTX 1070). The case I'm using is a Corsair 5000D, which I picked up as an open box at (the most popular computer retail store). I have three fans in the front pulling in air, two on the top above the motherboard pulling in air, and one exit fan in the rear. I may adjust the fan configuration later, but it is doing fine. Getting back to the cooler, I am pleasantly surprised with its performance. For the price you can't beat it, and it supports both Intel and AMD processors. It is a good product. I would definitely recommend it.
M**T
Cool Deal!
Looks good and works as intended, with ease of installation and above average build quality especially for the price. It also provides plenty of clearance for easy RAM access. My only complaint about this product is that it is pretty audible at full speed. Overall this is a great product especially for price, I couldn't recommend it more if you need a great quality air cooler!
R**I
Good Value CPU Cooler with Good Looks
This CPU cooler is good value for the performance. Pros: -Kept a Ryzen 7 5800x cool under long gaming loads. Kept it around 60-70c max at 100% gaming load. -Cool dual tower design with two fans included. -Noise at low temps is basically silent -Actually helped ambient temps because the two fans guided air out of the case. Cons: -Installation is a bit trickier than an AIO cooler or stock coolers because it has two mounting screws. -Tried it with an i9 14th gen but needs a good case airflow. It did not do well in a sustained workload or in benchmarks. Didn’t wait for it to stabilize before closing the programs. i7 wasn’t bad and the 9800x3d was ok too. Overall a good cpu cooler for the money. I kept it in an AM4 build because it kept the same temps as a 240mm AIO. It also helps with directing airflow in the case with the two fans.
R**C
Cool and Quiet
This worked well. It replaced my failing Corsair water cooler and brought my temps back into the green. It's also way quieter.
C**N
Looks good Arrived quick solid temps, odd smell at first from packaging
Arrived a bit quicker then was estimated all the way down here in Zambia Direct, Installation was fairly straight forward only issue I had was the instructions did not clarify somethings IE the color of the stand off and the writing is very small on them, there is no indication on the orientation and position of the fans Came with a small amount of TP so no room for mistakes The plastic the cooler was in Had a horrible burnt smell was almost over whelming but has gone after 3 days Temps: Sits around 59 making at 69(Nice) on a Ryzen 5700X3D barely any noise even when set to max in Bios and just the right size to fit in my Fractal Focus G Blue case It is very cheap compared to others and does a splendid job and the black and sliver looks nice
Trustpilot
1 month ago
1 month ago