Xigmatek NRP-MC651 ATX12V Ver.2.2 / EPS12V Ver. 2.92 650W Power Supply Multiple +12V Output Enhanced +12V current capability broadens utilization possibilities High Efficiency (up to 80%) Optimal solution for lower energy consumption, noise, and heat. Active Power Factor Correction (0.99 PFC) Reduce line loss & power distortion Double Forward Circuit Design Increase the reliability and efficiency of power. Smart and Silent Fan Control. Smart thermal control to balance noise and cooling.