VERY QUIET OPERATION Attained by using a high-quality fan System Power 9 400W CM is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system. 80 PLUS BRONZE CERTIFICATION High operating efficiency The 80 PLUS Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%. HIGH PERFORMANCE FOR YOUR SYSTEM Proven reliability for CPU and GPU System Power 9 400W CM provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems. INNOVATIVE DC-TO-DC CONVERSION Equipped with a wealth of advanced technology The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards. SEMI-MODULAR CABLE MANAGEMENT Total convenience and attractive design for cost-effective systems System Power 9 400W CM comes with full high-quality black sleeved cables that add a touch of class to any PC system. Thanks to the semi-modular cable management, cables that serve no purpose in the system are left out. COMPREHENSIVE PROTECTION A complete range of safety features Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.