The PC Power and Cooling Turbo-Cool 510 Express/ SLI is a no-nonsense black 510Watt (650Watt peak) power supply. The woven sleeved cables eminating from this PSU include no less than (6) SATA HDD connectors and (2) six pin 12V connectors for dual SLI videocards! This means no more converters that tie up four molex connectors or independent lines. The Turbo-Cool 510 Express/SLI's main selling point is its suitability for SLI videocard systems. This starts with the pair of 12V six-pin video card power connectors on the unit and ends with the fact that the power supply is one of only four officially recommended by nVidia for use with SLI videocard computer systems.