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
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Availability:
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Monday, Jun 9
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Style: PA120 SE
Features
- [Brand Overview] Thermalright is a Taiwan brand with more than 20 years of development. It has a certain popularity in the domestic and foreign markets and has a pivotal influence in the player market. We have been focusing on the research and development of computer accessories. R & D product lines include: CPU air-cooled radiator, case fan, thermal silicone pad, thermal silicone grease, CPU fan controller, anti falling off mounting bracket, support mounting bracket and other commodities
- [Product specification] Thermalright PA120 SE; CPU Cooler dimensions: 125(L)x135(W)x155(H)mm (4.92x5.31x6.1 inch); heat sink material: aluminum, CPU cooler is equipped with metal fasteners of Intel & AMD platform to achieve better installation, double tower cooling is stronger((Note:Please check your case and motherboard for compatibility with this size cooler.)
- 2 PWM FansTL-C12C; Standard size PWM fan:120x120x25mm (4.72x4.72x0.98 inches); fan speed (RPM):1550rpm10%; power port: 4pin; Voltage:12V; Air flow:66.17CFM(MAX); Noise Level25.6dB(A), leave room for memory-chip(RAM), so that installation of ice cooler cpu is unrestricted
- AGHP technique66mm heat pipes apply AGHP technique, Solve the Inverse gravity effect caused by vertical / horizontal orientation, 6 pure copper sintered heat pipes & PWM fan & Pure copper base&Full electroplating reflow welding process, When CPU cooler works, match with pwm fans, aim to extreme CPU cooling performance
- CompatibilityThe CPU cooler Socket supports: Intel:115X/1200/1700/17XX AMD:AM4;AM5; For different CPU socket platforms, corresponding mounting plate or fastener parts are provided(Note: Toinstall the AMD platform, you need to use the original motherboard's built-in backplanefor installation, which is not included with this product)
Product Dimensions: 4.92"L x 5.31"W x 6.1"H
Brand: Thermalright
Power Connector Type: 4-Pin
Voltage: 12 Volts
Wattage: 265 watts
Cooling Method: Air
Compatible Devices: Desktop
Noise Level: 25.6 dB
Material: Aluminium,Aluminum,Metal,Silicone
Maximum Rotational Speed: 1550 RPM
Product Dimensions : 6.1 x 5.31 x 4.92 inches; 2 Pounds
Item model number : PA120 SE
Date First Available : January 14, 2022
Manufacturer : Thermalright
Country of Origin : China
Best Sellers Rank: #1 in Computer CPU Cooling Fans
Customer Reviews: 4.7 4.7 out of 5 stars 3,364 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jun 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: PA120 SE
This air cooler was surprisingly good for the price. First of all, it was packaged very neatly and protected very well. It has a really nice, big heatsink and good fans with it. It's quiet, and comes with a lot of mounting hardware, so no matter what motherboard you have, you can use it. Although hard to get on first, it is a relatively simple set up process. Set the backplate for you motherboard under it. Put the spacers on the holes, place the retention brackets over the spacers, and then screw it in until the backplate and retention bracket are both snug against the motherboard. Take off the plastic piece from the heatsink, and then screw is onto the retention brackets. Take the fans, and position them with on ein the middle and the other on one side of the heatsink, both facing the same way and use the clips to keep them onto the heatsink. The fans also come with a splitter cable to minimize the total amount of fan headers needed. My one gripe is the fan clips. I just don't like them, they're somewhat hard to get on properly. If the fan clips were easier to get on, there would be no reason to get a different air cooler without rgb.
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Reviewed in the United States on May 15, 2025 by Hadden Wilhelm Hadden Wilhelm
Style: PA120 SE WHITE ARGB
I recently installed three of these Thermalright fans in my new NZXT H6 Flow build, and they've been outstanding. Installation was incredibly simple thanks to the daisy-chain feature, meaning all three only took up one fan port on my ASRock B650 Steel Legend motherboard - a huge plus for cable management. Performance-wise, these fans are surprisingly quiet, even when my AMD Ryzen 7 7800X3D (cooled by a Thermalright Peerless Assassin 120 SE ARGB) is under significant load. Most importantly, they deliver excellent temperature control, keeping my entire system consistently cool without any noticeable temperature spikes. In fact, the thermal performance is even better than some hybrid coolers I've used in previous builds. For anyone seeking effective and quiet cooling without a hefty price tag, these Thermalright fans are a fantastic choice. They have proven to be a critical component in keeping my new, fairly powerful setup (which also includes a SAMSUNG 990 EVO Plus SSD and TEAMGROUP T-Create DDR5 RAM) running optimally. The combination of easy installation, whisper-quiet operation, and superb thermal performance makes them an unbeatable value. I highly recommend them!
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Reviewed in the United States on May 19, 2025 by Charles W
Style: PA120 SE
I've been building PCs for over a decade, and the Thermalright Peerless Assassin 120 SE is hands down one of the best air coolers I've used—especially at this price point. Pros: Outstanding cooling performance: Easily keeps my Ryzen 7 5800X under 70°C under full load. It's right up there with much more expensive coolers like the Noctua NH-D15. Quiet operation: Even under load, the included fans are whisper quiet. Idle temps are practically silent. Easy installation: The mounting system is simple and solid. Thermalright includes all necessary hardware and clear instructions. Excellent build quality: The heatsink is hefty and well-made, and the fans feel durable with no rattling or vibrations. Great value: For around $35–$40, you're getting premium-tier performance without breaking the bank. Cons: Large size: Make sure to check your RAM clearance and case dimensions. It's a big cooler, so compact builds may have issues. Plain aesthetics: It's not flashy—no RGB or aggressive design—but if you care more about performance than looks, it’s perfect. Bottom line: If you're looking for top-tier air cooling without paying premium-brand prices, the Peerless Assassin 120 SE is a no-brainer. It punches way above its weight class and is one of the best deals in PC cooling right now.
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Reviewed in the United States on May 10, 2025 by Eugene Williams
Style: PA120 SE WHITE ARGB
I turned on PBO for my Ryzen 9 7900 to get closer to the performance of the R9 7900x. I did this to fix stuttering after upgrading my GPU. With PBO off, the CPU struggles to keep the GPU fed. Anyway, running at the normal 88 watt TDP, the AMD Wraith cooler that comes with the CPU was adequate. Not great, but it kept the CPU temperature in line. Really stressing the CPU with modern games and a modern GPU (upgraded from 3060 Ti to 9070 XT), the Wraith simply couldn't handle it. Temps were spiking and the CPU was thermal throttling. I bought this cooler and installed it. Immediately, it kept the average temperature while gaming to the mid-upper 60s C with the occasional spike into the 70s or 80s. Those spikes occur only under particularly heavy load such as loading a new area in a game. Overall, I've been very impressed with this cooler for my CPU. I just installed it today, so I haven't got any long term data yet, but if nothing changes, my review will stay at 5 stars.
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Reviewed in the United States on April 27, 2025 by Daryl
Style: PA120 SE ARGB
Cooling system works very well, but there was one small problem on installation. If I install the fans the way they were supposed to be installed, they hit my memory chips (see photo). I had to flip them over to the other side of the CPU and draw air through the coolers versus pushing air through the coolers (see second image). I’m not sure if that’s as efficient but it seems to be working OK.
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Reviewed in the United States on May 11, 2025 by Mark K. Mark K.
Style: PA120 SE
I upgraded my 16 year old's CPU because a power spike took his old AM4 processor out.. didn't want to redo the motherboard and RAM so went with a Ryzen 7 5700x. I had bought a 120mm AIO for him but it wouldn't fit in his case so we installed it with a wraith stealth cooler that came with his old processor.. temps were sitting around 85c though so I decided to order this. Installed it yesterday and temps have been closer to 50c since installing it. No noise to speak of and installation was pretty easy. Overall this one looks like a winner to me.. I would buy it again.
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Reviewed in the United States on May 21, 2025 by Deen Family