Rosewill Gaming Power Supply/PSU, 1000 Watt (1000W) 80 PLUS Bronze Certified PSU with Silent and Blue LED 135mm Fan and Auto Fan Speed Control, Semi-modular Design, RBR-1000MS Gaming 1000W Blue LED Fan Power Supplies: Rosewill RBR-1000MS is a professional power supply to support your gaming desktop computer system and an ideal solution to deliver high availability, scalability, maximum flexibility and price/performance. Silent Operation: The gaming 80Plus power supply is equipped with one 135mm fan to offer extraordinary airflow at an exceptional low noise level by different speed level in response to various temperature. 80+ Bronze Certified: 80 Plus bronze certified power supplies to deliver 80% or more efficiency at a normal loading conditions and outstanding Short-Circuit/Over-Current/Over-Voltage/Over-Power/Under-Voltage/Over-Temperature Protections. Semi-Modular Cable Design: The semi-modular cable design allows for easy installation, reduces system clutter, and helps maximize airflow through your computers chassis. UL, FCC, CE Certificated: With UL, FCC, and CE Certification, Rosewill ARC series power supplies with strong single +12V rail provide high efficiency operation for less heat and lower operating loss.