HP Pavilion All-in-One MS225 PC. Genuine Windows 7 Home Premium 64-bit - makes everyday tasks simple and makes new things possible.AMD Athlon? II 250u Dual-Core Processor. 1.60GHz. AMD RS780MN /SB700 Chipset. 2MB L2 Cache. 3600MHz System Bus. 4GB PC2-6400 DDR2 SDRAM memory. 320GB 7200RPM Serial ATA hard drive. Slim Tray SuperMulti DVD Burner with LightScribe Technology. ATI RadeonTM HD 3200 Graphics with 256MB graphics memory. Up to 1919MB Total Available Graphics Memory as allocated by Windows 7. 10/100Base-T network interface. Wireless LAN 802.11b/g with built-in WLAN antenna. Integrated High Definition Audio with 2.0 sound capabilities. 2 SoDIMM. Integrated webcam and built-in microphone