Thermalright Peerless Assassin 120 Mini White CPU Air Cooler - Compact

In this review the Thermalright Peerless Assassin 120 Mini White is presented as a compact, high-performance air cooler for builds where space and quiet operation matter most. The bottom line: it is aimed at small to mid-size systems that need better thermal headroom than stock coolers without sacrificing RAM clearance or chassis compatibility, and it delivers notable cooling for its compact 135mm height. The review found the cooler's double-tower design, six 6mm heatpipes and a 120mm PWM fan balance cooling power, noise control and build quality for mainstream AMD and Intel platforms.

Key Features

• Compact double-tower design: The 125 x 110 x 135 mm footprint provides a double-tower radiator that increases cooling surface while remaining compatible with many compact cases.
• AGHP 4th generation heatpipes: Six 6mm fully plated heatpipes use upgraded AGHP tech to maintain heat transfer efficiency regardless of cooler orientation.
• CNC micro-engraved copper base: A precision micro-engraved copper base with antioxidant coating helps ensure consistent contact and corrosion resistance for long-term thermal transfer.
• 120mm TL-D12W PWM fan: The included 120 x 25 mm PWM fan offers up to about 1500 RPM and strong airflow for its size with moderate noise levels.
• Broad socket compatibility: Mounting hardware supports modern Intel and AMD sockets including LGA 1700/1851 and AM4/AM5 for easy cross-platform use.

Who It's For

The Peerless Assassin 120 Mini White is best for PC builders running compact mid-tower and SFF cases who want a noticeable step up from stock coolers without a tall tower that interferes with memory modules or case panels. It suits enthusiasts who value a tidy, mech-style aesthetic and prefer an all-aluminium fin array with a blackened finish and plated heatpipes.

It is not the first choice for extreme overclockers who need the largest possible radiators or liquid cooling solutions, nor for systems where absolute silent operation at very low RPMs is the top priority. If you need the maximum TDP headroom or have unconventional clearance constraints, check case and RAM dimensions carefully before purchase.

Pros & Cons

Pros

• Excellent cooling-per-size thanks to the double-tower layout and six heatpipes, keeping CPU temps well controlled in many midrange builds.
• Good build quality with a CNC micro-engraved copper base and fully plated heatpipes for durability and consistent thermal contact.
• Quiet and efficient 120mm PWM fan with S-FDB bearing rated for long life and sensible airflow for the cooler's size.
• Fits a wide range of Intel and AMD sockets, making it versatile for upgrades and platform changes.

Cons

• While compact, the double-tower shape may still interfere in the smallest ITX cases; confirm clearance before buying.
• Not aimed at extreme overclocking compared with larger tower coolers or custom liquid loops.

Specifications

Model	PA120 MINI White
Dimensions (L x W x H)	125 x 110 x 135 mm
Heatpipes	6 x 6 mm, fully plated
Fan	TL-D12W 120 x 25 mm PWM, ~1500 RPM, 4-pin
Airflow / Noise	Up to ~66.9 CFM, ~25.6 dB(A)
Material	Aluminium fins, CNC micro-engraved copper base
Socket Compatibility	Intel LGA115x/1200/1700/1851/2011; AMD AM4/AM5

Our Verdict

The Peerless Assassin 120 Mini White is a smart choice for builders who need improved cooling in compact builds without large towers or bulky solutions. Its combination of six plated heatpipes, a tuned 120mm PWM fan and compact double-tower fins delivers solid thermal performance, quiet operation and broad socket support, making it good value for SFF and mainstream desktops that need reliable cooling without excessive height.

Frequently Asked Questions

Will this cooler fit in small form factor cases?
It fits many compact and mid-tower cases at 135 mm height, but you should verify CPU cooler clearance and RAM clearance in your specific chassis before buying.

Is the included fan PWM controllable?
Yes, the TL-D12W is a 4-pin PWM fan allowing motherboard speed control for quieter operation or higher airflow when needed.

Which sockets are supported?
The mounting kit supports common Intel sockets including LGA115x/1200/1700/1851 and AMD AM4/AM5 for cross-platform compatibility.