Mushkin Enhanced Volta 600W Power Supply Unit MKNPS600-A Advanced thermal & acoustic design automatically varies the PSU fan speed depending on the system load and temperature, allowing for the most stable and quiet computing environment no matter what programs are running. Enhanced power conditioning provides ultra-low ripple (1%) and superior voltage regulation (1%) under all load levels. Versaplug allows for an organized case and improves airflow by using only the required cables. This product is equipped with a 6+2 pin PCI Express power cable.