DeepCool ASSASSIN 4S BK Dual-Tower CPU Cooler

DeepCool ASSASSIN 4S BK is a massive dual-tower air cooler for CPUs, aimed at mid-range to high-end gaming and workstation systems. It combines a large 140 mm fan with a wide RPM range and serious heat dissipation surface. It is compatible with new sockets like LGA 1700, LGA 1851, and AM5, as well as older platforms. Its goal is to keep temperatures under control without excessive noise, even under serious CPU load.

What you get

The base of this cooler is a large 140 x 140 x 25 mm fan, which at up to 1800 RPM delivers serious airflow of 61.25 CFM through the two aluminum towers. This helps achieve lower temperatures and more stable CPU frequencies during prolonged gaming or rendering. Thanks to the 4-pin PWM connector, you can control the RPM according to the load – low RPM and quieter operation at idle, higher under load. With a maximum of 29.3 dBA, the noise remains within reasonable limits for a powerful air cooler. Compatibility with multiple sockets gives you the freedom to use it with both newer and older platforms without needing to change the cooler with every upgrade.

• Air cooling of type dual-tower, providing a large area for heat dissipation in more powerful CPU configurations.
• Compatibility with a wide range of sockets – LGA 1700, LGA 1851, AM5, AM4, LGA 2066, LGA 2011/2011-v3, LGA 1200, LGA 115x, making it a flexible choice for future upgrades.
• Large fan size 140 x 140 x 25 mm, providing a good balance between airflow and lower RPM.
• Wide speed range 500–1800 RPM, keeping your system quiet under light load and effectively cooled under full load.
• Airflow up to 61.25 CFM, suitable for cooling hotter processors and long gaming or work sessions.
• Noise level up to 29.3 dBA, which is reasonable for a powerful 140 mm fan and won't dominate the system's sound.
• 1 included fan with 4-pin connector for PWM control, without the need for additional controllers or adapters.

Who it is suitable for

ASSASSIN 4S BK is suitable if you are building a gaming or workstation build with a more serious CPU and want stable temperatures without switching to liquid cooling. It is also suitable if you frequently upgrade platforms – the rich socket support saves you from buying a new cooler. If you are looking for something very compact for small cases or a completely silent system, you should rather look towards lower-class or specific silent solutions.

The most sensible thing here is the combination of dual-tower design, large 140 mm fan, and wide compatibility with sockets – you get serious air cooling that can follow your future upgrades without unnecessary compromises.