Thermalright Peerless Assassin 120 SE Black CPU Air Cooler
The Thermalright Peerless Assassin 120 SE Black CPU Air Cooler uses six 6mm heat pipes on a C1100 pure copper, nickel-plated base, with a PWM fan rated up to 1550 RPM and 66.17 CFM. It stands 155 mm tall and supports AM5, AM4, LGA1851, LGA1700, LGA1200 and LGA115x sockets.
It suits gamers and builders who want strong, quiet air cooling without the pump and tubing of a liquid cooler. The all-black finish fits dark builds, and the rated 25.6 dBA noise level makes it a good fit for everyday desktops. Browse more air CPU coolers to compare.
Highlights
- 6 x 6mm heat pipes on a C1100 pure copper, nickel-plated base
- Supports AM5, AM4, LGA1851, LGA1700, LGA1200 and LGA115x
- Dimensions: L125 mm x W110 mm x H155 mm, 730g
- Fan up to 1550 RPM, 66.17 CFM airflow and 1.53 mm H2O air pressure
- Rated noise level of 25.6 dBA
- 4-pin PWM fan connector with S-FDB bearing
Best for
- Gaming PCs on current AMD AM5/AM4 or Intel LGA1851/LGA1700 platforms
- Builders who prefer air cooling over an AIO liquid cooler
- Quiet everyday or work desktops
- All-black PC builds
Specifications
| Dimension | L125 mm x W110 mm x H155 mm |
|---|---|
| Weight | 730g |
| Heat pipes | 6mm heatpipe x 6 units |
| Copper Base | C1100 Pure copper nickel plated |
| Rated Speed | 1550 RPM±10% (MAX) |
| Noise Level | 25.6 dBA |
| Air Flow | 66.17 CFM (MAX) |
| Air Pressure | 1.53 mm H2O (MAX) |
| Ampere | 0.20 A |
| Connector | 4 Pin (PWM Fan connector) |
| Bearing Type | S-FDB Bearing |
Compatibility and related parts
Before buying, confirm your PC case supports a CPU cooler height of at least 155 mm and that tall RAM heat spreaders will clear the cooler; check the specs of our PC cases if you are choosing a new one. Make sure your CPU uses one of the supported sockets by checking our processors (CPUs), and keep some thermal paste and pads on hand for remounting. The easiest route is our PC builder, which checks compatibility for you, with free assembly and testing when the cooler is bought as part of a PC build.
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Warranty
Warranty
- All products come with a 1-year official local warranty, unless mentioned otherwise.
- Accessories (such as cables, covers, power banks, etc.) are not covered under warranty.
- Please check your item at the time of delivery—you may refuse the order if you notice any damage.
- The warranty provided is an official local manufacturer warranty.
- Apple products include both local and international warranty, as per Apple’s policy.
Shipping & Returns
Shipping & Returns
• Shipping: Orders are processed within 0–2 business days. Standard delivery takes 0–5 business days depending on your location.
• Returns: You may return or exchange products within 10 days of receiving your order. Items must be in original condition with proof of purchase.
If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.
No advance payments required—even for preorders. Pay on delivery or cancel anytime, hassle-free.
FAQs
Will the Peerless Assassin 120 SE Black fit in my case?
Will the Peerless Assassin 120 SE Black fit in my case?
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Which CPU sockets does it support?
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How loud is this cooler?
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How do I connect the fan?
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