The Corsair Professional Series Gold power supply pushes the state of the art for reliable delivery of clean power under imperfect conditions. If you require mission-critical stability or you simply want one of the best power supplies available, the Professional Series Gold is for you. With 90% efficiency at 50% load, the Corsair Professional Series Gold power supply runs quieter, generates minimal excess heat, & saves you money every month. Its earned the 80 Plus Gold seal of approval, your guarantee that youre making the right choice for smart, efficient power delivery. Supports the latest ATX12V v 2.31 & EPS 2.92 standards & is backward compatible with ATX12V 2.2 & ATX12V 2.01 systems An ultra-quiet 120mm double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature 80 Plus Gold certified to deliver at least 90% efficiency at 50% load Active Power Factor Correction (PFC) with PF value of 0.99 Universal AC input from 90~264V No more hassle of flipping that tiny red switch to select the voltage input! A dedicated single +12V rail offers maximum compatibility with the latest components Over-voltage & over-current protection, under-voltage protection, & short circuit protection provide maximum safety to your critical system components High-quality Japanese capacitors provide uncompromised performance & reliability Completely modular cable system means that you can use only the cables you need Power supply upgrade & replacement is easy, as the cables only need to be disconnected at the power supply Low-profile, flat cable design reduces air friction & helps maximize airflow through your computers chassis A seven year warranty & lifetime access to Corsairs legendary technical support & customer service Dimensions: 150mm (W) x 86mm (H) x 160mm (L) MTBF: 100, 000 hours Safety Approvals: UL, CUL, CE, CB, FCC Class B, Tu V, CCC, C-tick