Add 500 watts of power to your system without removing your power supply when you use the FSP Booster X5. This power supply fits into an available cd rom bay or sits on the outside of your computer. You can use the FSP Booster X5 to power multiple video cards that are powered by pci express. The Booster X5 puts out 37.5 amps at 12 volts which will power pretty much any video card out there. If you are looking to upgrade your power supply without disturbing your old one when the Booster X5 is what you need. This is discontinued and no longer available.