OCZ ZS Series 650W 80PLUS Bronze High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom 650W of continuous power rated at 40C ambient temperature to deliver power as needed in a real world operating environment. Single +12V rail for efficient power distribution in your system. Compliant with ATX12V v2.2 standard for worry-free compatibility A large temperature and load controlled 135mm double ball-bearing fan for whisper quiet operation 80PLUS Bronze certified for saving your energy bill. Active Power Factor Correction (PFC) to effectively regulate input voltage. Heavy-duty protection circuitry, (over-voltage, over-current, under-voltage, and short circuit) for protecting your valuable components. Safety Approvals: UL, CUL, CE, CB, FCC Class B, TV, CCC, C-tick.