The Corsair RM650 is fully modular and optimized for silence and high efficiency. It’s built with low-noise capacitors and transformers, and Zero RPM Fan Mode ensures that the fan doesn’t even spin until the power supply is under heavy load. And with a fan that’s custom-designed for low noise operation, it’s whisper-quiet even when it’s pushed hard. 80 PLUS Gold rated efficiency saves you money on your power bill, and the low-profile black cables are fully modular, so you can enjoy fast, neat builds. And, like all Corsair power supplies, the RM650 is built with high-quality components and is guaranteed to deliver clean, stable, continuous power. Want even more? Connect it to your Corsair Link system (available separately) and you can even monitor fan speed and +12V current directly from your desktop. RM Series power supplies are designed with capacitors and transformers carefully selected to eliminate coil whine and other background noise that can be annoying in quiet environments. The efficient design of the RM650 means minimal excess heat generation, so the fan doesn't even need to spin under low to medium loads. And when you're pushing it hard, the thermal sensor controls the fan speed to ensure that it gets the cooling it needs without any extra noise. The custom-designed fan has an optimized blade profile for low-turbulence airflow and near-silent operation even at full speed. Highly efficient RM Series power supplies produce less heat and have lower operating costs. You can use only the cables you need, and leave the rest in the box for fast, easy, and great-looking builds. Power ratings are continuous, not peak, for superior protection for your valuable PC. Corsair uses high-quality internal components, and the RM650 is guaranteed to deliver clean, stable, continuous power. Specification: Key Features Continuous Power 650 Watts Efficiency (Approx.) 80 PLUS Efficiency Gold Certification 80 PLUS Gold Certification Fan Size 140mm Input Frequency Range 47~63Hz Current Input Current: 10A-5A Output Modular Type Full-Moduler Total Power 650 Watts AC Input 100-240V Connector Main Power ATX Connector x 1 CPU CPU x 1 PCI-E 4 x PCIe SATA 8 x SATA Floppy Floppy Connector x 2 Warranty Information Manufacturing Warranty 10 Years Warranty ..