Jonsbo CB-40 black CPU cooler - efficient tower cooling The Jonsbo CB-40 black is a reliable CPU air cooler for gaming and all-round systems. With four heat pipes and a 120-mm PWM fan, it offers a powerful cooling performance in a compact design. The tower design ensures directed airflow via the aluminium heat sink and enables efficient heat dissipation. The direct-contact base improves heat transfer directly from the CPU to the heat pipes. The 120-mm fan automatically adjusts its speed to the system load thanks to PWM, thus ensuring quiet operation in everyday life as well as sufficient performance under load. With its simple black look and wide compatibility to Intel and AMD sockets, the CB-40 is ideal for versatile PC rigs.