The Dimension XPS features a 3.0 GHz Intel Pentium 4 processor with Hyper-Threading technology and 800 MHz front side bus, 256MB DDR400 SDRAM memory, Radeon 9800 graphics card, a 60GB hard drive, and a 16x DVD drive. Other features include a standard 460-watt power supply, support for the latest Intel processors, and Serial ATA (SATA) hard drives in a RAID 0 or RAID 1 configuration. It offers up to three 5.25-inch drive bays, and also accommodates up to three internal 3.5-inch bays. To accommodate external expansion, the XPS system features two 1394 ports and eight USB 2.0 ports. A front-accessible 1394 port offers a convenience for digital video enthusiasts. The tower houses a 460-watt power supply at the bottom of the chassis to separate it from the main interior of the system. The chassis design results in a quieter system, and also makes internal components easier to access for maintenance and upgrades.