Extremely High Efficiency Up to 87 of efficiency. Ultra Stable Voltage Outputs DC to DC technology in VTE series, in which the 3.3V are built out of the 12V Rail, provides highest efficiency, most stable performance, and perfect regulation within ±3 at regular DC outputs. According to Design Guide for Power Supply from Intel the DC output voltages are required to remain within the ±5 regulation ranges in 3.3V, 5V and 12V rails. Cougar 120mm Ultra-Silent Fan Ultra-quiet & Temperature-controlled 120mm fan. Better power output with thermal control. Extremely low noise level, fan speed automatically regulated according to the temperature.   Massive Single 12V DC Output Extreme performance for powerful graphic systems Cougar Features Extremely High Efficiency Up to 87 of efficiency Ultra-Stable Voltage Output 3.3V DC-DC technology for enhanced voltage ability 105°C Japanese Standby Capacitor Increase the PSU life-span Massive Single 12V DC Output Extreme stability for powerful graphic systems Ultra-Quiet & Temperature-Controlled 120mm Fan Extremely low noise level, equipped with a large and ultra-quiet 120mm fan Compatible With the Latest PC-Technology Support the newest specifications of ATX12V Created for usage with current and next-generation multi-core CPU platforms Support Multi-GPU Technology Supports PCI express 3.0 next-generation graphics cards with 8(6 2) pin PCI-e connector Integrated Air Inlet Design Optimal air-dynamical design, lead to more silent operation Active Power Factor Correction {Active PFC) PF value up to 99 . provides clean and reliable power Full Protections With OCP, SCP, OVP, UVP, OPP   Protection OCP (Overcurrent protection) If the current on a single line is higher than indicated, the PSU automatically switches off. UVP (Under voltage protection) If the voltages fall below a certain tolerance value on the single lines, the PSU automatically switches off. General Brand     COUGAR Series     VTE Series Model     VTE500 DetailsType     ATX12V Maximum Power     500 W Fans     120mm Ultra-Silent Fan PFC     Active Main Connector     20 4Pin 12V Rails     Single PCI-Express Connector     2 x 6 2-Pin SATA Power Connector     5 Modular     Non-Modular Efficiency     Up to 87 Energy-Efficient     80 PLUS BRONZE Certified Over Voltage Protection     Yes Protection     OCP, SCP, OVP, UVP and OPP Input Voltage     100 - 240 V Input Frequency Range     50/60 Hz Input Current     10-6A Output     3.3V@16A, 5V@18A, 12V@37.5A, -12V@0.3A, 5Vsb@2.5A Max PSU Length     140 mm Connectors     1 x 24(20 4) Pins Main 1 x 8(4 4) Pins CPU 2 x 8(6 2) Pins PCI-E 5 x 5 Pins S-ATA 2 x 4 Pins Peripherals Dimension    3.39\" x 5.91\" x 5.51\"