Ideacentre  H405 500GB (Discontinued by Manufacturer) Ideacentre H405 Processor (speed, L2 cache, FSB) AMD Athlon X2 255 Dual Core Processor, ATI Radeon 3000 Serial ATA Hard Drive 500 GB, 7200 RPM Memory 3 GB, DDR3 - 1333 MHz, Optical Drive DVD +/- RW Keyboard PS/2, ALC 662 codec Integrated Communications Ethernet 10/100 Security McAfee Virus Scan Plus 2009 Trial version USB Optical Mouse Sound Solution HD Audio, Dual Channel Maximum Memory 8 GB (4 gb x 2) 3.1 GHz, 2MB L2 cache, 2 Cores Preloaded Operating System Windows 7 Home Premium 64 bit Display / Resolution N/A Video Graphics Integrated Graphics