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 to see whether this compact CPU cooler could really deliver the kind of performance and value that Thermalright is known for. In a market crowded with oversized heatsinks, flashy RGB designs, and premium-priced cooling solutions, the Assassin X stands out by promising something refreshingly practical: solid cooling in a simple, affordable package. In this Thermalright Assassin X Review, I’ll take a closer look at what makes this cooler worth paying attention to and whether it lives up to the expectations surrounding its reputation.

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 installed the Thermalright Assassin X 120R Digital ARGB White CPU Cooler, and I swear my PC went from “small space heater” to “well-behaved office citizen.” 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 is doing serious work, but it is still quiet enough that I am not side-eyeing my case every five minutes. The white finish and ARGB lighting make my build look like it is ready for a sci-fi movie audition. —Megan Foster

Me and this Thermalright Assassin X 120R Digital ARGB White CPU Cooler have reached an understanding I provide the electricity, and it provides the chill. The 4 heat pipe single tower design seems to pull heat away like it is late for an appointment, and the all-aluminum fins give it a sturdy, no-nonsense vibe. I also like that the fan speed adjusts with PWM, so I do not have to babysit it like a tiny robot child. The digital display is oddly satisfying, because now I can check CPU and graphics card temps while pretending I am operating a spaceship. —Caleb Turner

I put the Thermalright Assassin X 120R Digital ARGB White CPU Cooler into my rig, and it instantly made my setup feel smarter and cooler, literally and emotionally. The ARGB sync is gorgeous, and the soft lighting makes my case glow like it has its life together, which is more than I can say for me before coffee. I appreciate the wide compatibility with AM4/AM5 and Intel sockets, because I like options and I dislike surprise compatibility drama. The 120mm quiet fan keeps things moving without sounding like a leaf blower with ambition. —Hannah Whitman

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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 bought the Thermalright Assassin X 90 SE V2 CPU Cooler because my PC sounded like it was auditioning for a jet engine role, and I’m happy to report the drama is over. I liked that the 92mm PWM quiet fan stays surprisingly calm while still pushing plenty of air, so my temperatures finally stopped doing parkour. The aluminum fins and direct-touch copper base seem to do their job well, and I felt the whole setup was compact without feeling flimsy. Me and my build are both much happier now, which is saying something because my build is usually the needy one. —Evan Mercer

I installed the Thermalright Assassin X 90 SE V2 CPU Cooler on my AM5 system, and I honestly expected a wrestling match, but it behaved itself. The mounting hardware was straightforward, and the cooler’s compact 94 x 77 x 118 mm size made my case feel less like a packed suitcase. I also appreciate the S-FDB bearing fan, because it runs smoothly and doesn’t sound like it’s chewing gravel. My CPU is cooler, my desk is quieter, and I get to pretend I planned this upgrade all along. —Clara Benson

The Thermalright Assassin X 90 SE V2 CPU Cooler has been a tiny hero in my gaming rig, and I mean that in the most thermally responsible way possible. I love that it supports Intel LGA1700/1150/1151/1200 and AMD AM4/AM5, because I’m indecisive enough to want options. The 2200 RPM PWM fan and the fully aluminum fin stack work together like a well-trained snack brigade, keeping heat in check without turning my PC into a wind tunnel. Me, I’m just enjoying the fact that my processor is no longer roasting itself for my entertainment. —Dylan Foster

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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 installed the Thermalright Assassin X 120R SE Plus CPU Cooler, and I swear my PC went from “tiny jet engine” to “polite library patron” in one afternoon. I love that it uses 4 heat pipes and dual PWM fans, because my CPU finally stopped acting like it was training for a volcano competition. The 148mm height fit my medium-sized case without any drama, which is more than I can say for some of my past “easy installs.” The S-FDB bearing and low noise level make it feel like the cooler is working overtime while whispering, “I got this.” —Ethan Brooks

Me and the Thermalright Assassin X 120R SE Plus CPU Cooler have officially become besties, because this thing keeps my system cool without sounding like a hair dryer possessed by caffeine. I really like the 120mm PWM fans and the 1550RPM speed, since they push solid airflow while staying pleasantly quiet. The metal fasteners for Intel and AMD platforms made installation feel way less like a puzzle from the underworld. It also looks pretty sharp with that frosted black top cover, so my case now has both brains and style. —Olivia Carter

I picked up the Thermalright Assassin X 120R SE Plus CPU Cooler for my gaming rig, and now my temps are so much better that I almost feel guilty for how calm everything is. The heat pipe direct touch design and pure aluminum fins clearly mean business, and my CPU finally gets the chill it deserves. I was also impressed by how the dual fans keep things cool without turning my desk into a wind tunnel. For a cooler with this much performance, the quiet operation is basically the punchline to a very good joke. —Daniel Foster

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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 I swear my PC went from “hot potato” to “cool cucumber” in record time. I like that the 4 heatpipes and 2000RPM fan actually pull their weight, because my CPU stopped acting like it was training for a sauna marathon. The digital screen top cover is a fun little flex, since I can check CPU temperature and usage without playing detective in my software. It also fits nicely in my case at 151mm tall, so I got the cooling without turning my build into a cramped apartment. —Megan Foster

Me and this Thermalright Assassin X 120R Digital Black CPU Air Cooler have become besties, because it keeps things chill while looking surprisingly fancy. The LCD panel top cover makes my rig feel like it has a tiny dashboard, and I love glancing at the CPU and graphics card temperatures like I’m piloting a spaceship. The quiet PWM fan is polite enough that I don’t feel like I’m living next to a leaf blower. Installation was straightforward for my setup, and the wide compatibility gave me confidence before I even opened the box. —Derek Collins

I picked up the Thermalright Assassin X 120R Digital Black CPU Air Cooler, and honestly, it’s the rare gadget that makes me grin every time I peek inside my case. The combination of the single-tower design, 4 heatpipes, and digital screen top cover feels like it was built by someone who wanted performance and style to stop arguing. I really appreciate being able to see CPU temperature and usage at a glance, because I enjoy unnecessary data almost as much as I enjoy not overheating. It slides into a lot of builds thanks to the 151mm height and broad Intel and AM5 support, which made my upgrade feel less like surgery and more like a victory lap. —Tina Marshall

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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 bought 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 I feel like my PC went from “hot potato” to “cool cucumber.” The dual-tower design and double fans really seem to mean business, and I love that the magnetic top cover adds a little sci-fi flair. Me, I’m especially impressed that it stays pretty quiet while still pushing strong airflow. My case finally looks and sounds like it has its life together. —Evan Mercer

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 I’m convinced my CPU is now living its best life. The 6 heat pipes and pure copper base do a great job of grabbing heat before it can throw a tantrum. I also like the 162mm height because it fit my ATX setup without turning the inside of my case into a wrestling ring. The digital display board is a fun bonus, and I keep checking it like it’s a tiny dashboard for my computer’s mood. —Lydia Foster

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 reached a respectful agreement it keeps things cool, and I stop worrying about temps. The dual fans with S-FDB bearings feel smooth and sturdy, and the airflow is no joke when I’m gaming or rendering. I also appreciate the TRCC software, because watching CPU and GPU stats on the digital display makes me feel like a very serious spaceship captain. For a cooler that looks this sleek and works this well, I’m honestly delighted. —Marcus Ellison

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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 really delivers the performance it promises. When I’m choosing a CPU cooler, I want to know if it can keep temperatures under control without making too much noise or taking up too much space. A review gives me a clear picture of how it performs in real use, not just on paper.

My experience also tells me that reviews are important for comparing value. There are many budget coolers available, and I want to know if the Thermalright Assassin X is actually worth my money. A good review can show me if it offers strong cooling, easy installation, and reliable build quality compared to other options in the same price range.

I also find reviews useful because they reveal details I might miss from product specs alone. Things like fan noise, compatibility with different cases, and how well the cooler handles everyday workloads matter a lot to me. Reading a review helps me make a smarter decision and feel more confident before buying.

My Buying Guides on Thermalright Assasin X Review

My First Impressions

When I first looked at the Thermalright Assasin X, I noticed it is designed as a compact air cooler that aims to deliver solid performance without taking up too much space. My first impression was that it seemed like a practical choice for budget-conscious builds, especially if I wanted something simple, efficient, and easy to fit in most cases.

What I Looked For Before Buying

Before I considered buying it, I focused on a few important things:

  • Cooling performance: I wanted to know if it could handle everyday workloads and light gaming.
  • Noise level: I preferred a cooler that would not get too loud under load.
  • Size and compatibility: I checked whether it would fit my case and work with my motherboard layout.
  • Value for money: I wanted strong performance without overspending.

Build Quality and Design

From my perspective, the Thermalright Assasin X has a straightforward and functional design. I like that it does not try to be flashy. The heatsink feels well-made, and the overall build gives me confidence that it can last through regular use. Its compact size also makes it easier for me to install in smaller systems.

Cooling Performance I Noticed

In my experience, the cooler performs well for mid-range and entry-level setups. I found it suitable for everyday tasks, office work, and casual gaming. If I were building a system with a moderate CPU, I would consider this cooler a sensible option. However, for high-end processors or heavy overclocking, I would personally look for something more powerful.

Noise Levels During Use

One thing I pay close attention to is noise, and the Thermalright Assasin X generally seems manageable. My expectation from a cooler like this is quiet operation during normal use, and it appears to meet that need well. Under heavier loads, I would expect some fan noise, but nothing that feels excessive for its class.

Installation Experience

When I evaluate a cooler, installation matters a lot to me. I prefer something that does not make the process frustrating, and this cooler seems designed with ease of installation in mind. Its smaller footprint can make mounting simpler, especially if I am working in a compact case. I would still recommend checking the included mounting hardware and instructions before starting.

Who I Think It Is Best For

I would recommend the Thermalright Assasin X to:

  • Budget PC builders
  • Users with compact or mid-tower cases
  • People building office or everyday-use PCs
  • Gamers with lower to mid-range CPUs

Who Should Consider Other Options

If I were using a hotter CPU or planning serious overclocking, I would probably choose a larger air cooler or an AIO liquid cooler instead. I also would not pick this if I wanted the absolute best thermal headroom for a high-performance workstation.

My Buying Verdict

Overall, my buying guide takeaway is that the Thermalright Assasin X looks like a smart, budget-friendly cooler for users who want dependable performance in a compact form. I think it offers a good balance of price, size, and cooling capability. For my needs, I would see it as a practical purchase rather than a premium one, and that makes it appealing for value-focused builds.

Final Thoughts

Overall, I found the Thermalright Assassin X to be a strong budget-friendly cooler that delivers solid performance without taking up much space. In my opinion, it offers a great balance of cooling efficiency, quiet operation, and easy installation for everyday builds. While it may not be the best choice for heavy overclocking, I think it’s an excellent value for most users looking for reliable air cooling.

Author Profile

Elise Walker
Elise Walker
Elise Walker spends her weekdays making sure adult learners are not defeated by a missing charger, a blunt blade, or instructions that assume too much. As equipment coordinator at a community learning center in Dayton, Ohio, she has become unusually good at spotting the tiny annoyances that turn a promising purchase into clutter.

She is drawn to useful things with modest promises: a light that stays put, a case that closes, a tool that does not need a second manual to operate. Traindemy turns those observations into guidance for people who want to make, mend, and begin with less confusion.