Product DescriptionPower-Up 450-Watt ATX Power Supply Every PC needs a lot of power. Especially if you're an Athlon system or Pentium 4 user. This power supply was specifically designed to work with the Athlon systems and is Pentium 4 ready, but it works well with any ATX system. With a huge 450-watt capacity, this power supply will power up your ATX system! This power supply even features a 120mm Fan!