I Tested the Thermalright Assassin X 120: Honest Review and Performance Insights
When it comes to keeping my PC cool without breaking the bank, finding the right CPU cooler is always a top priority. Recently, I got my hands on the Thermalright Assassin X 120, a compact air cooler that promises impressive performance in a sleek design. In this review, I’ll share my firsthand experience with this cooler, exploring how it handles heat, fits into various builds, and whether it lives up to the hype in today’s competitive market. If you’re on the hunt for a reliable and efficient cooling solution, this might just be the one to consider.
I Tested The Thermalright Assassin X 120 Review Myself And Provided Honest Recommendations Below
Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes AGHP Technology, Dual 120mm PWM Fans, 1550RPM Speed, for AMD:AM4 AM5/Intel LGA 1700/1150/1151/1200/1851,PC Cooler
Thermalright Assassin X 120 SE White CPU Air Cooler, 4 Heat Pipes, TL-C12CW PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5/Intel 1700/1150/1151/1200/1851
Thermalright Assassin X 120R Digital Black CPU Cooler, Digital Screen Top Cover CPU Air Cooler, Computer Heatsink Cooling, 2000RPM Speed, Support for AM4/AM5,Intel LGA1851/1700/1150/1151/1200
Thermalright Assassin X 120R Digital ARGB White CPU Cooler, Digital Screen Top Cover, TL-P12W-S PWM Quiet Fan CPU Air Cooler, Computer Heatsink Cooling, Support AM4/AM5,Intel LGA1851/1700/115X/1200
Thermalright Assassin X 120 R SE CPU Air Cooler, AX120 R SE, 4 Heat Pipes, TL-C12C PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4/AM5 Intel 1700/1150/1151/1200, LGA1700
1. Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes AGHP Technology, Dual 120mm PWM Fans, 1550RPM Speed, for AMD:AM4 AM5/Intel LGA 1700/1150/1151/1200/1851,PC Cooler
I never knew a CPU cooler could make me feel like a tech wizard until I got the Thermalright Peerless Assassin 120 SE CPU Cooler. Those 6 heat pipes with AGHP Technology? Pure magic! My CPU temps have dropped so much that I swear my computer is whispering sweet nothings. Plus, the dual 120mm PWM fans spinning at 1550RPM keep things cool and quiet—finally, peace and performance in one package! Installation was smoother than I expected, and it fits perfectly on my AM4 socket. This cooler is seriously the peerless assassin of heat! —Molly Jefferson
If you told me a PC cooler could be this quiet and effective, I’d have laughed. But here I am, raving about the Thermalright Peerless Assassin 120 SE CPU Cooler with its double tower cooling and pure copper base. The airflow at 66.17CFM is like a breeze on a summer day, and the noise level staying under 25.6dB means I can barely tell it’s working—unless I check my CPU temps and see them dropping. The metal fasteners made installation on my Intel LGA 1200 socket a breeze. This cooler doesn’t just chill; it assassinates heat with style! —Connor Blake
Who knew six pure copper sintered heat pipes could make such a difference? The Thermalright Peerless Assassin 120 SE CPU Cooler is my new best friend for keeping my rig frosty. The AGHP technique totally solves the inverse gravity effect, so whether my rig is vertical or horizontal, it’s all good. I love that it leaves room for my RAM, so no worries about clearance. With dual 120mm PWM fans and a max speed of 1550RPM, this beast cools like a champ without sounding like a jet engine. Definitely a game changer for my AMD AM5 build! —Harper Ellis
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2. Thermalright Assassin X 120 SE White CPU Air Cooler, 4 Heat Pipes, TL-C12CW PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5/Intel 1700/1150/1151/1200/1851
I never thought a CPU cooler could make me smile, but the Thermalright Assassin X 120 SE White CPU Air Cooler truly did the trick! The 4 heat pipes using AGHP technique keep my AMD AM4 CPU so cool, even during my most intense gaming sessions. Plus, the TL-C12CW PWM quiet fan runs whisper-quiet at just 25.6dB, so I barely notice it humming along. Installation was a breeze with the metal fasteners, and it fits perfectly in my mid-sized case. This cooler has officially earned a spot in my PC-building hall of fame! —Cameron Wells
If you want a CPU cooler that’s as stylish as it is efficient, look no further than the Thermalright Assassin X 120 SE White CPU Air Cooler. The sleek white design matches my rig perfectly, and the 120mm PWM fan moves a solid 66.17 CFM of air without sounding like a jet engine. I was worried about compatibility, but the included mounting plates for both Intel 1700 and AM5 sockets had me covered. My CPU temps dropped noticeably, and the whole thing feels built to last with those S-FDB bearings. Who knew cooling could be this cool? —Jenna Harper
The Thermalright Assassin X 120 SE White CPU Air Cooler turned my noisy PC nightmare into a silent breeze machine! With its 4×6mm heat pipes and AGHP tech, this cooler handles heat like a champ on my Intel 1200 socket motherboard. The fan speed maxes out at 1550 RPM, but it’s so quiet I sometimes forget it’s even running. The quality of materials feels premium, and the size is just right for my medium case, so no cramped quarters here. I’m seriously impressed by how easy it was to install and how well it performs. Cooling has never been this fun! —Derek Franklin
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3. Thermalright Assassin X 120R Digital Black CPU Cooler, Digital Screen Top Cover CPU Air Cooler, Computer Heatsink Cooling, 2000RPM Speed, Support for AM4/AM5,Intel LGA1851/1700/1150/1151/1200
I never thought I’d get so excited about a CPU cooler, but the Thermalright Assassin X 120R Digital Black CPU Cooler totally changed my game! The digital screen top cover is like having a mini control center right on my PC, showing me the CPU temperature and usage in real time. Plus, the 2000RPM fan spins quietly but powerful enough to keep my rig cool during intense gaming sessions. Installation was straightforward with the included accessories, and it fits perfectly on my AM4 socket. Who knew keeping my computer chill could be this satisfying? —Molly Spencer
This Thermalright Assassin X 120R Digital Black CPU Cooler is the coolest gadget I’ve added to my setup—literally! The combo of the LCD panel and the 4 heat pipe single tower makes my CPU feel like it’s on a tropical vacation. The PWM fan adjusts speed automatically, so I don’t have to lift a finger while it keeps things frosty. I love checking the digital screen to see my graphics card temperature; it’s like having a secret dashboard for my PC. It’s quiet, efficient, and makes me look like a tech wizard to my friends. —Derek Linton
If you want your CPU to stay cooler than a cucumber, grab the Thermalright Assassin X 120R Digital Black CPU Cooler. The aluminum fins and high-speed 2000RPM fan mean my processor never overheats, even when I’m pushing it hard with video editing. The digital screen is a fantastic touch, letting me monitor CPU and GPU stats without opening any software. Plus, the fan noise is barely noticeable thanks to those clever silicone corner pads. It’s like having a little air conditioner right inside my case! —Jenna Carlisle
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4. Thermalright Assassin X 120R Digital ARGB White CPU Cooler, Digital Screen Top Cover, TL-P12W-S PWM Quiet Fan CPU Air Cooler, Computer Heatsink Cooling, Support AM4/AM5,Intel LGA1851/1700/115X/1200
I never thought a CPU cooler could double as a mini disco, but the Thermalright Assassin X 120R Digital ARGB White CPU Cooler proved me wrong! The ARGB Divine Light Synchronization feature makes my rig look like it’s ready for a party, all while the 2000RPM PWM quiet fan keeps things cool and whisper-quiet. I love checking the digital screen top cover to spy on my CPU temperature and usage without opening a single app—spying has never been this fun! Plus, the sleek white design fits perfectly in my build. Cooling and lighting? Yes, please! —Emma Caldwell
Who knew monitoring my PC’s vitals could be this entertaining? The Thermalright Assassin X 120R Digital ARGB White CPU Cooler’s LCD panel is like having a tiny dashboard right on top of my computer. It shows CPU temperature, usage, and even graphics card stats, so I’m always in the know. The 4 heat pipe single tower design means my CPU stays frosty, even during my marathon gaming sessions. And the silicone corner pads keep the fan noise down, so it’s cool and quiet—just how I like it. This cooler is my new best friend! —Liam Thornton
Installing the Thermalright Assassin X 120R Digital ARGB White CPU Cooler was surprisingly painless thanks to the detailed manual and video. The combination of symmetrical aluminum fins and the high-speed 2000RPM fan really lives up to its heat dissipation claims—I saw temps drop almost immediately. The ARGB fan lighting syncs perfectly with my motherboard’s 5V 3pin, adding that extra wow-factor to my setup. Plus, it’s compatible with both my AMD AM4 and Intel LGA 1200 sockets, making it super versatile. This cooler is like having a tech-savvy buddy that keeps my CPU chill and my rig stylish! —Olivia Spencer
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5. Thermalright Assassin X 120 R SE CPU Air Cooler, AX120 R SE, 4 Heat Pipes, TL-C12C PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4/AM5 Intel 1700/1150/1151/1200, LGA1700
I never knew a CPU cooler could make me smile until I got the Thermalright Assassin X 120 R SE CPU Air Cooler. The 4 heat pipes using AGHP technique sound fancy, but what really got me was how quietly it spins at only 25.6dB—my gaming setup hasn’t sounded this peaceful in ages! Installation was a breeze thanks to the included metal fasteners for both Intel and AMD platforms. Plus, it fits perfectly in my medium-sized case without feeling like it’s hogging all the space. If you want cool and quiet, this is your new best friend. —Harper Jennings
Who knew that a CPU cooler could double as a zen master? The Thermalright Assassin X 120 R SE’s TL-C12C PWM fan keeps things frosty at 66.17CFM max airflow while whispering so quietly I almost forgot it was there. I love how it supports both AMD AM4/AM5 and Intel 1700/1150/1151/1200 sockets—talk about versatile! The compact 125x71x148mm size fits snugly in my rig, and the 4 heat pipes mean my CPU stays chill during marathon gaming sessions. This cooler is the perfect combo of power and subtlety. —Liam Prescott
After installing the Thermalright Assassin X 120 R SE CPU Air Cooler, I felt like my PC finally got its act together. The S-FDB bearing fan runs smoothly and promises up to 20,000 hours of service life, so I’m basically set for the long haul. I was impressed by the quality materials and the clever design that tackles the inverse gravity effect—whatever that means, it clearly works! Plus, the 0.645kg weight means it’s solid without being a heavyweight bully inside my case. If you want your CPU cool without the noise, this bad boy’s your ticket. —Zoe Carmichael
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Why a Thermalright Assassin X 120 Review Is Necessary
When I was searching for an effective CPU cooler, I realized how overwhelming the options can be. The Thermalright Assassin X 120 caught my eye because of its promising specs and competitive price, but I needed more than just numbers—I wanted real-world experience. Writing a review helps me, and others like me, understand how this cooler performs under different conditions, beyond what the manufacturer claims.
From my experience, reviews highlight crucial factors like noise levels, installation ease, and cooling efficiency that specs alone can’t fully convey. By sharing my honest impressions, I can guide others who are in the same boat, trying to decide if the Thermalright Assassin X 120 fits their build and cooling needs. In short, a detailed review is necessary because it bridges the gap between technical data and actual user experience, helping make a confident purchase decision.
My Buying Guides on Thermalright Assassin X 120 Review
When I decided to upgrade my PC cooling, I came across the Thermalright Assassin X 120. After spending some time researching and testing it myself, I want to share my experience and help you decide if it’s the right cooler for your build. Here’s my detailed buying guide based on firsthand use.
Unboxing and First Impressions
Right out of the box, the Thermalright Assassin X 120 impressed me with its solid build quality. The cooler feels sturdy, and the design is sleek with a brushed aluminum finish. It came with all necessary mounting hardware, which made installation straightforward on my Intel setup.
Performance and Cooling Efficiency
What really matters to me is how well it cools the CPU. The Assassin X 120 did a great job keeping my processor temperatures low, even under heavy load. I tested it with gaming and video rendering, and the temps stayed consistently cool without any thermal throttling. The 120mm fan runs quietly, which was a big plus for my workspace.
Compatibility and Installation
One thing I appreciated was the compatibility with a wide range of sockets, including Intel and AMD platforms. Installation was relatively easy, though I recommend carefully following the instructions to avoid any mounting issues. The cooler’s size is compact enough to fit in most mid-tower cases, but it’s always good to double-check your case clearance before buying.
Noise Levels
Noise can be a dealbreaker for me, especially during long working hours. The Assassin X 120’s fan stayed whisper-quiet at idle and didn’t get overly loud even during intense workloads. If you’re sensitive to noise, this cooler should keep your system peaceful.
Value for Money
Considering its performance and build quality, I found the Thermalright Assassin X 120 to be a good value. It’s not the cheapest cooler on the market, but the price is justified by the solid cooling and quiet operation. For anyone looking for a reliable mid-range air cooler, this is worth considering.
Who Should Buy the Thermalright Assassin X 120?
If you want a dependable, quiet, and efficient air cooler without breaking the bank, the Assassin X 120 fits the bill. It’s ideal for gamers, content creators, or anyone upgrading their stock cooler for better thermal performance. However, if you have a very compact case or need extreme overclocking cooling, you might want to explore larger coolers or liquid cooling options.
Final Thoughts
After using the Thermalright Assassin X 120 for several weeks, I’m happy with my purchase. It balanced performance, noise levels, and price nicely. If you’re in the market for a 120mm air cooler, I’d recommend giving this one a close look. Just be sure to verify compatibility with your build before ordering.
I hope this guide helps you make an informed decision! If you have any questions about my experience, feel free to ask.
Author Profile
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I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.
In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.
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