Thermalright
Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Bottom line: The Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler ($33.21 on Amazon as of 2026-10-21 16:17 UTC): Six 6mm pure copper sintered heat pipes with AGHP anti-gravity design; main trade-off: 155mm tall dual-tower needs a case with matching clearance.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Six 6mm pure copper sintered heat pipes with AGHP anti-gravity design
- ✓ Rated for a wide 120-245W CPU TDP range
- ✓ Two TL-C12C-S PWM fans push up to 66.17 CFM
- ✓ Rated 25.6dB(A) or quieter at 1500rpm max fan speed
- ✓ Ships with AM4, AM5, LGA1700, 1200 and 115X mounting hardware
Cons
- ✗ 155mm tall dual-tower needs a case with matching clearance
- ✗ 0.97kg heatsink puts real load on the motherboard
- ✗ Aluminium fin stack instead of a copper fin design
- ✗ Fans top out at 1500rpm, limiting headroom past the 245W ceiling
Manufacturer description
The Thermalright Peerless Assassin 120 SE ARGB is a dual-tower air cooler built around six 6mm pure-copper sintered heat pipes using Thermalright's AGHP technology, which counters the inverse-gravity effect when the cooler sits vertically or horizontally in your case. Rated for a 120-245W TDP band, it pairs that heatsink with two TL-C12C-S 120x120x25mm PWM fans spinning at 1500rpm (+/-10%) for up to 66.17 CFM of airflow at a rated noise level of 25.6dB(A) or lower. The full assembly measures 125 x 135 x 155mm and weighs 0.97kg, with the fin stack designed to leave clearance for memory…
SpecPicks Verdict
SpecPicks scored Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Thermalright's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will the Peerless Assassin 120 SE ARGB fit my case?
The cooler measures 125mm long x 135mm wide x 155mm tall, so your case needs at least 155mm of CPU cooler clearance. Check your case spec sheet before ordering.
Does it support AM5 and LGA1700?
Yes. Thermalright includes mounting plates and fasteners for AMD AM4 and AM5 plus Intel 115X, 1200, 1700 and 17XX sockets in the box.
Can it handle a high-wattage CPU?
Thermalright rates the cooler for a 120W to 245W TDP window. Chips inside that range are within spec; anything above it is outside the manufacturer's stated rating.
How loud is it under load?
The two TL-C12C-S fans are rated at 25.6dB(A) or lower, spinning to 1500rpm with a 10 percent tolerance. Both are 4-pin PWM, so your motherboard can throttle them down further.
Will it block my RAM slots?
The fin stack is designed to leave room for memory modules, and the standard 120x120x25mm fans can be shifted on their clips. Very tall RGB heat spreaders may still need the front fan raised.
Key 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 ARGB; 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
- 【2 PWM Fans】Model:TL-C12C-S; Colorful and gorgeous ARGB light effects; Standard size PWM fan:120x120x25mm (4.72x4.72x0.98 inches); Product weight:0.97kg(2.1lb); fan speed (RPM):1500rpm±10%; power port: 4pin; Voltage:12V; Air flow:66.17CFM(MAX); Noise Level≤25.6dB(A), leave room for memory-chip(RAM), so that installation of ice cooler cpu is unrestricted
- 【AGHP technique】6×6mm heat pipes apply AGHP technique, Solve the Inverse gravity effect caused by vertical / horizontal orientation, cpu cooler TDP is 120 to 245W. 6 pure copper sintered heat pipes & PWM fan & Pure copper base&Full electroplating reflow welding process, When CPU cooler works, match with ultra-silent airflow fans, aim to extreme CPU cooling performance
- 【Compatibility】The 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
Full Specifications
| Brand | Thermalright |
|---|---|
| Model | PA120 SE ARGB 1700-D2 |
| Weight | 0.97kg |
| Voltage | 12 volts_of_direct_current |
| Wattage | 7 watts |
| Material | Aluminum |
| Dimensions | 4.92x5.31x6.1 inch |
| Unit Count | 1 Count |
| Noise Level | 25 db |
| Part Number | PA120 SE ARGB 1700-D2 |
| Material Type | Aluminum |
| Cooling Method | Air |
| Number of Items | 1 |
| Number of Packs | 1 |
| Air Flow Capacity | 66.17 cfm |
| Compatible Devices | Desktop |
| Power Connector Type | 4-Pin |
| Maximum Rotational Speed | 1550 rpm |
| Item Dimensions L x W x H | 4.92"L x 5.31"W x 6.1"H |
| Full listing title | 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 |
Ready to buy?
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 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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