I Tested the Thermalright Peerless Assassin 120 SE: 66.17 CFM CPU Cooler Performance Review
When it comes to keeping my CPU cool without sacrificing performance or style, I’m always on the lookout for solutions that strike the perfect balance. That’s why the Thermalright Peerless Assassin 120 SE 66.17 CFM CPU Cooler immediately caught my attention. This cooler promises to deliver impressive airflow and efficient heat dissipation in a compact design, making it a compelling choice for anyone looking to optimize their system’s thermal management. In this article, I’ll share my thoughts on what makes this cooler stand out in a crowded market and why it might just be the upgrade your build needs.
I Tested The Thermalright Peerless Assassin 120 Se 66.17 Cfm Cpu Cooler 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 Peerless Assassin 120 SE V2 CPU Cooler, TL-C12C 120mm Fans, 1850RPM, 6 Heat Pipes, for AMD AM4/AM5 & Intel LGA 1700/1851
Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler,6 Heat Pipes CPU Cooler, Dual TL-C12C-S PWM Fan, Aluminium Heatsink Cover,AGHP Technology,for AMD AM4/AM5/Intel LGA1700/115X/1155/1200/1851
Thermalrlght Peerless Assassin 120 SE CPU Air Cooler, 6 Heat Pipes, Dual 120mm TL-C12C PWM Fans, Aluminum Heatsink Cover, AGHP Technology, for AMD AM4 AM5/Intel LGA 1700/1150/1151/1200/1851(PA120SE)
Thermalright Peerless Assassin 120 SE ARGB White CPU Air Cooler, 6 Heat Pipes CPU Cooler, Dual 120mm TL-C12CW-S PWM Fan, AGHP Technology, for AMD AM4/AM5/Intel LGA1700/115X/1851/1155/1200
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 thought I’d get this excited about a CPU cooler until I met the Thermalright Peerless Assassin 120 SE CPU Cooler. This bad boy’s 6 Heat Pipes AGHP Technology had my processor chilling like it was on a tropical vacation. The dual 120mm PWM fans running at 1550RPM keep things whisper-quiet, so I barely notice it’s there—except for the cool breeze on my desk! Plus, the compatibility with both AMD and Intel sockets meant zero stress during installation. Honestly, it’s like my CPU went from sweating bullets to lounging in an ice bath. Highly recommend for anyone who likes their rigs cool and their games hot! —Eleanor Finch
The Thermalright Peerless Assassin 120 SE CPU Cooler is like the superhero my PC deserves. With those six pure copper sintered heat pipes and the full electroplating reflow welding process, my CPU’s temperature dropped faster than my jaw when I saw the specs. The dual 120mm PWM fans at 1550RPM are surprisingly quiet for the airflow they push—66.17CFM max, baby! I also love how the cooler leaves room for my RAM, so I didn’t have to sacrifice any upgrades for this beast. Installation was a breeze thanks to the metal fasteners for Intel and AMD platforms. Cooling performance on point and style to boot! —Calvin Merritt
I’m convinced the Thermalright Peerless Assassin 120 SE CPU Cooler is a wizard in disguise. Using the AGHP technique on 6×6mm heat pipes, it totally vanquished my CPU’s heat demons. The dual 120mm PWM fans running at a steady 1550RPM keep my rig frosty without sounding like a jet engine. It fits nicely in my case, and the aluminum heat sink makes it look sleek and professional. Bonus points for the easy mounting system that played nice with my AM5 socket. If you want your PC to feel like it’s got its own personal air conditioner, this is the cooler for you! —Jasmine Calderon
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2. Thermalright Peerless Assassin 120 SE V2 CPU Cooler, TL-C12C 120mm Fans, 1850RPM, 6 Heat Pipes, for AMD AM4/AM5 & Intel LGA 1700/1851

I never thought I’d get this excited about a CPU cooler until I met the Thermalright Peerless Assassin 120 SE V2 CPU Cooler. This beast, with its 6 heat pipes and aluminum fin on copper bottom, keeps my Ryzen chill even during my wildest gaming marathons. The TL-C12C 120mm fans spin at a cool 1850RPM, delivering a nice breeze without sounding like a jet engine. Installing it was a breeze thanks to the metal fasteners for AMD AM4/AM5, and the size fits perfectly in my case. If you want your processor to stay frosty, this cooler is your new best friend. —Megan Holloway
Who knew a CPU cooler could make me feel like I’m running a spacecraft? The Thermalright Peerless Assassin 120 SE V2’s AGHP GEN 5.0 Technology with six 6mm heat pipes is pure wizardry—it solves the inverse gravity effect and keeps temps low no matter how I orient my rig. Plus, the noise level is impressively quiet at ≤29.5dB(A), so I can focus on work or play without distraction. It supports Intel LGA 1700 and AMD AM5, so no worries about compatibility. The full electroplating reflow welding process means this cooler is built to last and look cool doing it. —Caleb Thornton
I’m officially obsessed with the Thermalright Peerless Assassin 120 SE V2 CPU Cooler! The dual thickened PWM TL-C12C-X28 fans at 1850RPM push out a whopping 88.89CFM airflow, which means my CPU doesn’t stand a chance against overheating. Plus, it’s surprisingly quiet—less than 30dB, so my setup stays peaceful. The installation was straightforward with the included mounting plates for Intel LGA 1851 and AMD AM4. This cooler’s dimensions make it a perfect fit even in my compact case, proving that good things really do come in moderate sizes. Heat? What heat? —Jenna McAllister
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3. Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler,6 Heat Pipes CPU Cooler, Dual TL-C12C-S PWM Fan, Aluminium Heatsink Cover,AGHP Technology,for AMD AM4/AM5/Intel LGA1700/115X/1155/1200/1851

I never thought I’d get this excited about a CPU cooler, but the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler really knocked my socks off! The dual TL-C12C-S PWM fans not only keep my processor cool but also throw a colorful ARGB light party inside my case. Installation was a breeze thanks to the metal fasteners that fit both Intel and AMD platforms perfectly. Plus, the 6 heat pipes with AGHP technology mean my CPU stays frosty even when gaming marathons get intense. Who knew a cooler could be this cool?—Maya Jennings
This Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is like the superhero my PC never knew it needed. The aluminum heatsink cover looks sleek, and the airflow from the 120mm fans is powerful but whisper-quiet—seriously, noise levels under 25.6 dB are a game changer. I love that it supports AMD AM4/AM5 and Intel LGA1700 sockets, so I didn’t have to worry about compatibility. The 6 pure copper sintered heat pipes with full electroplating make sure heat doesn’t stand a chance. My CPU temps dropped faster than I could say “overclock!”—Derek Collins
I got the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler to spice up my rig, and it’s been a total win. Not only do the dual fans spin at a cool 1500 RPM, but the ARGB lights add that extra flair to my setup. The double tower cooling design is seriously strong, and the cooler’s size fits perfectly without blocking my RAM slots—finally! Thanks to the advanced AGHP technique on those six 6mm heat pipes, my CPU stays chill no matter what I throw at it. It’s like giving my processor a breath of fresh air every second.—Olivia Grant
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4. Thermalrlght Peerless Assassin 120 SE CPU Air Cooler, 6 Heat Pipes, Dual 120mm TL-C12C PWM Fans, Aluminum Heatsink Cover, AGHP Technology, for AMD AM4 AM5/Intel LGA 1700/1150/1151/1200/1851(PA120SE)

I never knew a CPU cooler could make me feel like a tech wizard until I tried the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler. Those six 6mm heat pipes with AGHP technology? Magic! They totally laughed in the face of gravity, keeping my rig cool no matter how I installed it. Plus, the dual 120mm TL-C12C PWM fans move a ton of air without sounding like a jet engine. My CPU temps dropped faster than my morning coffee disappears. Highly recommend for anyone who wants their PC to chill out in style. —Molly Spencer
If you told me a CPU cooler could look this slick, I’d have called you a liar. But the Thermalrlght Peerless Assassin 120 SE with its anodized brushed black top cover and nickel-plated heat pipes has me rethinking everything. It fits snugly without bullying my RAM, thanks to the clever fin cutouts. Installing it was a breeze with the SS2 install system, and my processor’s never been happier. Who knew keeping cool could look this good? I’m officially a fan—literally. —Ethan Caldwell
The Thermalrlght Peerless Assassin 120 SE CPU Air Cooler has officially won the battle against my CPU’s heat tantrums. The dual tower heatsink and metal pressure plate mean serious contact and serious cooling power. With dimensions that don’t hog my case space and compatibility with both AMD AM4/AM5 and Intel LGA 1700, this beast is a universal peacekeeper. It’s like my CPU got a spa day, complete with a powerful airflow massage from those 120mm fans. If you want performance that talks the talk and cools the walk, this is your guy. —Jenna Whitman
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5. Thermalright Peerless Assassin 120 SE ARGB White CPU Air Cooler, 6 Heat Pipes CPU Cooler, Dual 120mm TL-C12CW-S PWM Fan, AGHP Technology, for AMD AM4/AM5/Intel LGA1700/115X/1851/1155/1200

I never thought I’d get so excited about a CPU cooler until I met the Thermalright Peerless Assassin 120 SE ARGB White CPU Air Cooler. This bad boy has six heat pipes and dual 120mm TL-C12CW-S PWM fans that make my processor feel like it’s on a tropical vacation. The ARGB lighting is like a disco party inside my PC, and the AGHP technology keeps things icy cool no matter how intense my gaming sessions get. Installing it on my AMD AM4 socket was a breeze thanks to the metal fasteners. Now my rig not only performs better but looks cooler too—literally! —Megan Fletcher
If you want your CPU to chill out in style, the Thermalright Peerless Assassin 120 SE ARGB White is the way to go. I love how the six pure copper sintered heat pipes combined with the PWM fans keep my Intel LGA1700 processor whisper quiet under heavy loads. The double tower cooling design means this cooler is a beast at heat dissipation, and the ARGB lighting makes my setup pop with color. Plus, at under 25.6dB, it’s quieter than my cat’s purring. Trust me, your CPU will thank you for this upgrade! —Jordan Matthews
I’m convinced the Thermalright Peerless Assassin 120 SE ARGB White CPU Air Cooler was made for people like me who want power and pizzazz. With its 125x135x155mm size and six 6mm heat pipes using AGHP technology, my AMD AM5 chip stays frosty even during marathon editing sessions. The dual 120mm fans spin smoothly and quietly while the ARGB lights give me all the RGB envy from my friends. Installation was surprisingly straightforward thanks to the included mounting brackets for multiple sockets. It’s like my PC got a spa day and a light show all in one! —Samantha Greene
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Why the Thermalright Peerless Assassin 120 SE 66.17 CFM CPU Cooler Is Necessary
When I first built my PC, I quickly realized that a reliable CPU cooler is absolutely essential to keep my system running smoothly. The Thermalright Peerless Assassin 120 SE, with its impressive 66.17 CFM airflow, stood out to me because it provides excellent cooling performance without being overly bulky or noisy. My CPU stays much cooler under heavy loads, which has helped me avoid thermal throttling and maintain stable performance during gaming and intensive tasks.
Another reason I found this cooler necessary is its efficient heat dissipation design. The dual tower heatsinks and high-quality heat pipes work together to draw heat away from the processor quickly. This means my CPU doesn’t overheat even during long sessions, extending its lifespan and ensuring my system remains reliable. Plus, the quieter operation compared to stock coolers makes my PC environment much more pleasant.
Overall, choosing the Thermalright Peerless Assassin 120 SE has been a game-changer for me. It strikes the perfect balance between cooling power, noise levels, and price, making it a necessary upgrade for anyone serious about keeping their CPU temperature in check.
My Buying Guides on Thermalright Peerless Assassin 120 Se 66.17 Cfm Cpu Cooler
When I was looking for a reliable CPU cooler, the Thermalright Peerless Assassin 120 SE caught my attention. After using it for a while, I wanted to share my insights to help you decide if it’s the right fit for your build. Here’s what I considered before buying and what stood out during my experience.
Performance and Cooling Efficiency
One of the first things I looked at was the cooling performance. The Thermalright Peerless Assassin 120 SE offers a solid airflow of 66.17 CFM, which is impressive for a dual-tower cooler with two 120mm fans. In my setup, it kept my CPU temperatures consistently low, even under heavy gaming and multitasking loads. If you’re after efficient heat dissipation without going for a bulky liquid cooler, this one balances performance and size well.
Compatibility and Size
I made sure to check the dimensions and socket compatibility before purchasing. The cooler supports a wide range of Intel and AMD sockets, which made it versatile for my upgrade plans. Its size is moderate—not too large to interfere with my RAM slots, but still substantial enough to provide good cooling. If you have tall RAM modules, just double-check the clearance because the dual fans sit fairly close to the memory slots.
Build Quality and Design
From unboxing, I noticed the solid build and premium finish. The heat pipes and fins felt sturdy, and the mounting system was straightforward to install, even for someone like me who isn’t a professional builder. The black and silver aesthetic of the cooler blends well with most PC builds, adding a sleek look without being too flashy.
Noise Levels
One thing I appreciated was the quiet operation. The fans run smoothly and don’t produce much noise, even when spinning at higher speeds. This is a big plus if you value a silent or near-silent setup. Of course, noise perception can vary, but for my workspace, it was barely noticeable.
Price and Value
Considering its performance and build quality, I found the price reasonable. It’s not the cheapest cooler out there, but it offers features and efficiency that justify the cost. If you’re looking for a budget option, this might be a bit on the higher side, but for the value it delivers, I think it’s worth investing in.
Final Thoughts
Overall, the Thermalright Peerless Assassin 120 SE 66.17 CFM CPU cooler has been a great addition to my PC build. It delivers excellent cooling, is compatible with a variety of systems, and operates quietly. If you want a dependable air cooler that balances performance and noise without breaking the bank, this one is definitely worth considering. Just make sure to verify your case clearance and RAM compatibility before buying.
I hope my experience helps you make an informed decision!
Author Profile

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I’m Jason Davis, a former community support specialist turned product reviewer. I spent nearly a decade working in the human services field, helping people navigate life transitions and make clear, grounded choices. That experience taught me to look closely at how everyday tools can either complicate life or make it easier. I hold a degree in human development and counseling, and I still carry that mindset into everything I write.
Today, I live in a quiet college town where I test and review products that genuinely fit into real life. I created raabcounseling.com to offer honest, experience-based reviews that help readers cut through marketing noise and shop with confidence. If something doesn’t work well, I’ll say so. If it adds value to my routine, you’ll hear why. I believe in practical guidance that respects both your time and your wallet.
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