be quiet! SFX L BN239

A miniature SFX power supply unit designed for modern builds in small cases where the combination of high power and efficient cooling is essential. With a power output of 650W, it fully utilizes the +12V rail's potential, delivering up to 600W for the CPU and graphics card, making it suitable not only for mid-range systems but also for advanced SFF configurations with hardware combinations like "GeForce RTX 4070 + Intel Core i5-14600K Ryzen 5 7600X".

The 80+ Gold certification and Cybenetics Efficiency Gold confirm high efficiency, reducing heat output and lowering the cooling system's load. Meanwhile, Cybenetics Noise A- ensures a low noise level, not exceeding 29 dB even at maximum load, which is similar to the background noise of a quiet room. This feature is particularly important for compact cases where fans operate closer to the user.

The cooling system is built with a 120mm fan optimized by be quiet!'s proprietary technology to minimize noise and vibrations. In regular operation scenarios, the unit remains virtually silent, with a gradual increase in fan speed without sharp jumps. The modular cable system simplifies wiring organization in confined spaces, improving airflow within the case. The built-in set of protective mechanisms includes overvoltage, overcurrent, and short circuit protection.