windows xp pro mac

ONE Quad-Core 2.8GHz Intel Xeon processor, 2GB RAM, ATI Radeon HD 2600 XT with 256MB memory, 320GB HD, 16x double-layer SuperDrive, OS X 10.5 Leopard

Two Quad-Core 2.8GHz Intel Xeon processors, 2GB RAM, NVIDIA 8800GT W/512MB, 320GB HD, 16x double-layer SuperDrive, OS X 10.5 Leopard

Two Quad-Core 3.2GHz Intel Xeon processors, 2GB RAM, ATI Radeon HD 2600 XT with 256MB memory, 320GB HD, 16x double-layer SuperDrive, OS X 10.5 Leopard

Two Quad-Core 3.0GHz Intel Xeon processors, 2GB RAM, ATI Radeon HD 2600 XT with 256MB memory, 320GB HD, 16x double-layer SuperDrive, OS X 10.5 Leopard

Two 3GHz Quad-Core 3.0GHz Intel Xeon processors, 2GB RAM, NVIDIA GeForce 7300 card with 256MB memory, 250GB HD, TWO 16x double-layer SuperDrives, OS X 10.5 Leopard

Intel Xeon processors. Two dual-cores. One powerful quad workstation.** Installation of Parallels Desktop and Windows XP software may add an extra day to shipping times **

Intel Xeon processors. Two dual-cores. One powerful quad workstation. And you get to decide how fast it flies

Two Quad-Core 2.8GHz Intel Xeon processors, 2GB RAM, ATI Radeon HD 2600 XT with 256MB memory, 320GB HD, 16x double-layer SuperDrive, OS X 10.5 Leopard

24", 2.33GHz Intel Core 2 Duo, 1GB 667 DDR2 SDRAM, 250GB Serial ATA, DVD-R/CD-RW Super Drive 8x.