The CXI-600B has dual PCI-E connectors for high end graphic cards and peripheral connectors for all your other devices. The gold coated grill not only helps the air ventilation, but helps prevent future corrosion that can occur with time, which could lead to a decrease in electrical transfer. A 120mm ball bearing fan with 3 speed control setting that allows you to select the level of fan speed – low, high or automatic. In all 3 settings, you will find that the PSU will still remain virtually silent.