Intel 845G chipset with 266 MHz Double Data Rate (DDR) memory 256MB installed(2slots one open)Intel Pentium 4 2.8GHz 512K cache 533MHz FSB4slotx4bay Desktop 3xFull lenght PCI, one full AGPUp to 2GB of DDR system memory support ATI Radeon 7000 64MB AGP 4x Adapter16X DVD-ROMIntegrated 10/100 EthernetUltra ATA 100 40GB 7200RPMWindows XP Pro