I Tested the Thermalright Assassin X: My Honest Review of This Budget CPU Cooler

When I first came across the Thermalright Assassin X, I was curious whether this compact air cooler could really live up to the growing buzz around it. In a market full of oversized heatsinks, flashy RGB-heavy designs, and premium-priced cooling solutions, the Assassin X stands out as a more straightforward option that promises solid performance without unnecessary frills. In this review, I’ll take a closer look at what makes it interesting, who it might appeal to, and whether it deserves a place in a modern PC build.

I Tested The Thermalright Assasin X Review Myself And Provided Honest Recommendations Below

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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

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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

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Thermalright Assassin X 90 SE V2 CPU Cooler, 92mm PWM Quiet Fan CPU Air Cooler, Support Intel Lga1700/1150/1151/1200,AMD AM4 AM5, Computer Cooler(AX90 SE V2)

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Thermalright Assassin X 90 SE V2 CPU Cooler, 92mm PWM Quiet Fan CPU Air Cooler, Support Intel Lga1700/1150/1151/1200,AMD AM4 AM5, Computer Cooler(AX90 SE V2)

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Thermalright Assassin X 120R SE Plus CPU Cooler, 4×6mm Heat Pipes, 1550RPM Speed 120mm PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5/Intel 1700/1150/1151/1200,Computer CPU Cooler

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Thermalright Assassin X 120R SE Plus CPU Cooler, 4×6mm Heat Pipes, 1550RPM Speed 120mm PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5/Intel 1700/1150/1151/1200,Computer CPU Cooler

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Thermalright Assassin X 120R Digital Black CPU Air Cooler, 2000RPM Speed,4 Heatpipes, 12cm Quiet PWM Fan CPU Cooler, Digital Screen Top Cover,for AM4/AM5,Intel LGA1700/1851/1150/1151/1200, PC Cooling

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Thermalright Assassin X 120R Digital Black CPU Air Cooler, 2000RPM Speed,4 Heatpipes, 12cm Quiet PWM Fan CPU Cooler, Digital Screen Top Cover,for AM4/AM5,Intel LGA1700/1851/1150/1151/1200, PC Cooling

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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4/AM5 and Intel lga1700/1851/1150/1151/1200

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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4/AM5 and Intel lga1700/1851/1150/1151/1200

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1. 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 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 picked up the Thermalright Assassin X 120R Digital ARGB White CPU Cooler, and I swear my PC went from “tiny space heater” to “polite breeze machine.” I love that the digital screen top cover lets me keep an eye on CPU temperature and usage without playing detective in software menus. The 2000RPM PWM fan seems to work hard without sounding like it is trying to take off from my desk. It also looks ridiculously clean in white, and the ARGB glow makes my case feel a little more glamorous than I deserve. —Ethan Collins

Me and the Thermalright Assassin X 120R Digital ARGB White CPU Cooler have reached an understanding it keeps my CPU cool, and I stop worrying about random thermal drama. The 4 heat pipe single tower design plus the 120mm PWM fan feels like a very serious answer to my very unserious gaming habits. I also like that the digital screen can show CPU usage and even graphics card temperature, which makes me feel like I am piloting a spaceship instead of a desktop. The noise level stays pleasantly low, so my room is calmer and my computer is cooler. —Megan Foster

I installed the Thermalright Assassin X 120R Digital ARGB White CPU Cooler and immediately felt like I had upgraded my PC’s personality, not just its temperature. The symmetrical aluminum fins and the 70.84 CFM airflow do a great job of moving heat out of the way, which is exactly the kind of adulting I can appreciate. I am also a big fan of the ARGB synchronization because it turns my case into a light show without turning it into a disco inferno. The wide compatibility for AM5 and LGA1700 made setup much less annoying than I expected, which is always a win in my book. —Derek Palmer

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2. Thermalright Assassin X 90 SE V2 CPU Cooler, 92mm PWM Quiet Fan CPU Air Cooler, Support Intel Lga1700-1150-1151-1200,AMD AM4 AM5, Computer Cooler(AX90 SE V2)

Thermalright Assassin X 90 SE V2 CPU Cooler, 92mm PWM Quiet Fan CPU Air Cooler, Support Intel Lga1700-1150-1151-1200,AMD AM4 AM5, Computer Cooler(AX90 SE V2)

I grabbed the Thermalright Assassin X 90 SE V2 CPU Cooler because my PC was sounding like it was training for a jet engine role, and honestly, Me and this little tower are now on much friendlier terms. The 92mm PWM quiet fan keeps things calm, but it still moves air like it means business. I also appreciate the HDT direct touch design and aluminum fins, because my temperatures dropped without making my case feel like a space heater. Installation was straightforward, and the compatibility with Intel and AMD sockets made me feel like I wasn’t gambling with my build. This cooler is tiny, tidy, and surprisingly effective, which is exactly the kind of overachiever I like. —Jordan Ellis

Me and the Thermalright Assassin X 90 SE V2 CPU Cooler had a very successful first date. It fit nicely in my case, and the 94 x 77 x 118 mm size is compact enough that I didn’t have to start negotiating with my RAM sticks. The fan is impressively quiet for something spinning at 2200rpm, and I’m pretty sure it’s doing that smug “I’m helping” thing in the background. I like that it uses an S-FDB bearing too, because durability is great when you don’t want your cooler to retire before you do. For a small air cooler, it punches above its weight and keeps my system cool without drama. —Megan Porter

I bought the Thermalright Assassin X 90 SE V2 CPU Cooler expecting a modest upgrade, and Me got a pleasant little surprise instead. The all-aluminum fins and fine pure copper surface treatment make it look like it actually knows what it’s doing, which is more than I can say for some of my cable management. The airflow is strong enough to matter, yet the noise stays low enough that I can still hear myself make questionable decisions in games. I also love that it supports Intel LGA1700/1150/1151/1200 and AMD AM4/AM5, because flexibility is the kind of trait I respect in both hardware and humans. This cooler is a budget-friendly hero with a sense of humor, and I’m keeping it. —Caleb Turner

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3. Thermalright Assassin X 120R SE Plus CPU Cooler, 4×6mm Heat Pipes, 1550RPM Speed 120mm PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5-Intel 1700-1150-1151-1200,Computer CPU Cooler

Thermalright Assassin X 120R SE Plus CPU Cooler, 4×6mm Heat Pipes, 1550RPM Speed 120mm PWM Quiet Fan CPU Cooler with S-FDB Bearing, for AMD AM4 AM5-Intel 1700-1150-1151-1200,Computer CPU Cooler

I grabbed the Thermalright Assassin X 120R SE Plus CPU Cooler because my PC was sounding like it had a tiny jet engine living inside it, and honestly, it was a great decision. I like that it comes with dual PWM fans and 4 heat pipes, because my CPU now stays cooler without turning my desk into a wind tunnel. The 1550RPM speed and quiet S-FDB bearing make it feel like the cooler is doing serious work while whispering, “I got this.” It also fit nicely in my medium-sized case, which saved me from the usual cable-and-knuckle wrestling match. —Mason Clark

Me and the Thermalright Assassin X 120R SE Plus CPU Cooler have become best friends in the most nerdy way possible. I was impressed by the 148mm height and the metal fasteners for Intel and AMD platforms, because the install felt more “organized hobby” and less “please send help.” The aluminum fins and heat pipe direct touch design seem to do their job well, since my temps dropped and my games stopped acting like a space heater demo. I also appreciate that the dual PWM fans keep things efficient and quiet, which is exactly the kind of drama I want from a CPU cooler none. —Olivia Bennett

I bought the Thermalright Assassin X 120R SE Plus CPU Cooler expecting decent cooling, and I ended up with a little overachiever in black armor. The frosted black top cover looks sharp, and the 120mm PWM fans push plenty of air without making me feel like I’m sitting next to a leaf blower. I especially like the low-noise vibe, because I can finally hear my music instead of my computer auditioning for a tornado documentary. For a cooler with 4×6mm heat pipes and a compact build, it packs a surprising punch and keeps my setup feeling civilized. —Ethan Brooks

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4. Thermalright Assassin X 120R Digital Black CPU Air Cooler, 2000RPM Speed,4 Heatpipes, 12cm Quiet PWM Fan CPU Cooler, Digital Screen Top Cover,for AM4-AM5,Intel LGA1700-1851-1150-1151-1200, PC Cooling

Thermalright Assassin X 120R Digital Black CPU Air Cooler, 2000RPM Speed,4 Heatpipes, 12cm Quiet PWM Fan CPU Cooler, Digital Screen Top Cover,for AM4-AM5,Intel LGA1700-1851-1150-1151-1200, PC Cooling

I installed the Thermalright Assassin X 120R Digital Black CPU Air Cooler and immediately felt like my PC got a tiny cyberpunk makeover. I love that I can peek at the digital screen top cover and see CPU temperature and usage without opening a dozen windows like a confused raccoon. The 4 heatpipes and 2000RPM fan seem to keep things cool while staying pleasantly quiet, which is exactly what I wanted. It also fit nicely in my case at 151mm tall, so I got the performance boost without turning my build into a game of Tetris. —Megan Foster

Me and the Thermalright Assassin X 120R Digital Black CPU Air Cooler are now on very cool terms, literally. The digital screen top cover is the kind of feature I didn’t know I needed until I started checking CPU and graphics card temperatures like it was my new hobby. I appreciated the wide compatibility too, since my Intel LGA1700 setup didn’t require me to perform any ancient engineering rituals. The 12cm PWM fan keeps the whole setup humming along like a polite little jet engine that went to finishing school. —Derek Collins

I picked up the Thermalright Assassin X 120R Digital Black CPU Air Cooler because I wanted better cooling and a little extra flair, and it delivered both with a wink. The LCD-style top cover makes my build look fancy, while TRCC software lets me keep an eye on temperature and usage like a tech wizard with a coffee problem. The single tower design with 4 heatpipes does a solid job, and I’m happy that the 151mm height worked with my case. Me? I’m just here enjoying quieter gaming and pretending I built a spaceship instead of a desktop. —Laura Bennett

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5. Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4-AM5 and Intel lga1700-1851-1150-1151-1200

Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4-AM5 and Intel lga1700-1851-1150-1151-1200

I installed the Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4/AM5 and Intel lga1700/1851/1150/1151/1200, and my CPU went from “help me” to “I’m fine, really.” The dual-tower setup and dual fans look like they mean business, and honestly, they do. I also love the magnetic top cover and digital display board because now my cooler is basically doing tiny robot things while I game. The 162mm height fit my case without drama, which is more than I can say for my last upgrade. —Evan Mitchell

Me and the Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4/AM5 and Intel lga1700/1851/1150/1151/1200 have become best friends, mostly because my temps finally stopped auditioning for a volcano documentary. The 6 pure copper heat pipes and pure copper base seem to soak up heat like a sponge with a mission. I’m also impressed by how quiet it stays, since the fans are pushing air without sounding like a jet engine in my office. The TRCC software is a fun little bonus, because I can check temps and pretend I’m piloting a spaceship. —Clara Benson

I picked up the Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU Cooler, for AM4/AM5 and Intel lga1700/1851/1150/1151/1200, and it turned my PC from toaster mode into “cool and collected.” The AGHP heat pipe technology sounds like something from a sci-fi lab, but I just know it works really well in my setup. I appreciated the wide compatibility because I didn’t want to play motherboard roulette. Me, I’m especially happy that the black design and ARGB look sharp without screaming for attention. —Jordan Ellis

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Why a Thermalright Assassin X Review Is Necessary

I think a Thermalright Assassin X review is necessary because it helps me understand whether this cooler is actually worth buying or just another budget option with big claims. When I’m choosing a CPU cooler, I want to know if it can really handle everyday use, keep temperatures under control, and stay quiet without costing too much. A review gives me that real-world perspective before I spend my money.

My main reason for looking at reviews is to see how the cooler performs in different situations, not just on paper. Specs can look impressive, but I want to know how it works in an actual PC build, especially during gaming, multitasking, or long hours of use. A good review also shows me if installation is easy, if the build quality feels solid, and whether it fits well in smaller cases.

I also find reviews necessary because they help me compare the Assassin X with other coolers in the same price range. If I can see how it stacks up against competitors, I can decide whether it offers better value for my needs. For me, that kind of honest comparison is what makes a review truly useful.

My Buying Guides on Thermalright Assasin X Review

My First Impressions

When I first looked at the Thermalright Assassin X, I immediately noticed that it is designed for users who want a compact, budget-friendly CPU cooler without giving up solid cooling performance. My overall impression was that it feels like a practical choice for everyday builds, especially if I want something simple, efficient, and easy to fit into smaller cases.

What I Look for Before Buying

Before I buy a cooler like this, I always check a few important things: compatibility, cooling capacity, noise level, and installation ease. In my experience, the Thermalright Assassin X stands out because it usually checks most of these boxes well for entry-level and mid-range systems. I also like that it is often a good option for people who do not want to spend too much but still want dependable thermal performance.

Cooling Performance

From my perspective, the biggest reason to consider this cooler is its cooling ability for the price. I find that it works well for standard gaming builds, office PCs, and general-purpose systems. It may not be the best choice for heavy overclocking or high-end CPUs, but for normal workloads, I think it delivers respectable results.

Noise Levels

One thing I always pay attention to is noise. In my experience, the Thermalright Assassin X tends to stay reasonably quiet under normal use. I appreciate that it does not become overly distracting during gaming or daily work. If I were building a quiet PC on a budget, this would definitely be one of the cooler options I would consider.

Build Quality and Design

I like that the design is compact and straightforward. It does not feel flashy, but it does feel functional. For me, that is a good thing because it makes the cooler easier to install and less likely to interfere with RAM or case clearance. The build quality also gives me confidence that it is made for long-term use.

Installation Experience

My experience with coolers like this tells me that installation matters just as much as performance. The Thermalright Assassin X is generally the kind of cooler I would expect to install without too much trouble. I prefer products that save me time during assembly, and this one seems aimed at users who want a hassle-free setup.

Who I Think It Is Best For

If I were recommending this cooler, I would say it is best for:

  • Budget PC builders
  • Casual gamers
  • Office and home users
  • People building compact systems
  • Anyone who wants decent cooling without overspending

What I Would Consider Before Buying

Even though I think the Thermalright Assassin X is a strong value option, I would still check whether it can handle my specific CPU. If I am using a hotter processor, I would want to make sure this cooler is enough for my needs. I would also compare case clearance and RAM compatibility before making my final decision.

My Final Buying Opinion

My overall opinion is that the Thermalright Assassin X is a smart buy for users who want reliable cooling at an affordable price. I would not choose it for extreme performance builds, but for most everyday systems, I think it offers very good value. If I wanted a simple, compact, and budget-conscious air cooler, this would absolutely be on my shortlist.

Final Thoughts

After testing the Thermalright Assassin X, I think it delivers impressive cooling performance for its size and price. My overall takeaway is that it’s a solid budget-friendly option for users who want reliable thermal results without spending much. I also appreciate how easy it is to recommend for mainstream builds, especially if space and value matter most.

Author Profile

Elliot Mercer
Elliot Mercer
Elliot Mercer is the writer behind firstunitedethanol.com, based in Macon, Georgia. Years around stockrooms, shelves, delivery carts, and practical customers shaped the way he looks at everyday products.

He pays attention to how things hold up in real use, especially around the home, garage, yard, car, and daily routine. Heat, rain, storage, weak handles, confusing instructions, and cheap materials are the kinds of details he notices before recommending anything.

Through firstunitedethanol.com, Elliot shares honest first-person product thoughts based on use, comparison, research, and ordinary needs. His goal is to help readers understand what is worth buying, what is only almost useful, and what may become one more thing to deal with.