If you are looking for a high quality power supply at a great price then the ST Zalman PSUs could be just watch you are looking for. They are exceptionally quiet, 80 PLUS certified and feature a Two-Forward switching design for increased reliability and stability. 80 PLUS Certified With up to 86% efficiency (230V AC, 50% load), its 80 PLUS certified and guarantees higher efficiency compared to uncertified products. 80 PLUS is an energy efficiency certification program administered by Ecos Consulting of the U.S.A. Outstanding Reliability and Stability Japanese capacitors are incorporated in the 1st stage smoothing circuit for reliability and stability even after an extended period of operation. Two-Forward Switching Design The Two-Forward Switching Design minimizes switching loss and internal heat, for enhanced reliability and stability. ATX12V v2.3 Compatible The latest PSU design standard is incorporated for compatibility with a wide range of CPUs, motherboards, and graphic cards. Dual Rail +12V DC Output Two independent +12V outputs for core components facilitate high stability operation. Dual Graphic Cards Support 6-Pin and 6+2 Pin PCI-E Connectors are provided for dual graphic card setups. ATI CrossFire X Certified. Ultra Quiet 120mm Fan An ultra quiet cooling fan increases airflow while minimizing noise for an ultra quiet computing environment. Active PFC for Improved Power Factor & Reduced Harmonics By implementing Active PFC (Power Factor Correction), instead of Passive PFC with a Power Factor (PF) of 75%, the PF is improved up to 99% while harmful harmonic frequencies are reduced to meet the Line Harmonic Distortion Requirement of EC61000-3-2 Class D. ATX20+4 Pin Mainboard Power Connector The ATX20+4 Pin connector enhances compatibility for both 20-Pin and 24-Pin type motherboard power connectors. Supports ATX12V CPU 4-Pin & EPS12V CPU 8-Pin The two ATX12V CPU 2+2 (4-Pin) power cables can be combined to form an EPS12V CPU 8-Pin power cable. Sleeved Cables All power cables are sleeved for easy cable management and improved air circulation inside the computer case. Multiple Safety Features Safety features including Over-Voltage Protection, Over-Current Protection, Short-Circuit Protection, Under-Voltage Protection, and Over-Temperature Protection safely protect the system.