Product Detail Powered by Intel Core 2 Quad Q8400 / 2.66 GHz processor Has 2 GB RAM and 320 GB hard drive Radeon HD 3470 graphics card Windows XP pre-installed; Microsoft Office Ready . The "Lenovo ThinkCentre M58 7373 - Tower - 1 x Core 2 Quad Q8400 / 2.66 GHz - RAM 2 GB - HDD 1 x 320 GB - DVD-Writer - Radeon HD 3470 - Gigabit Ethernet - Windows 7 Pro / XP Pro downgrade - pre-installed: Windows XP - Monitor : none - Microsoft Office Ready" is best product for you. We recommended Lenovo ThinkCentre M58 7373 - Tower - 1 x Core 2 Quad Q8400 / 2.66 GHz - RAM 2 GB - HDD 1 x 320 GB - DVD-Writer - Radeon HD 3470 - Gigabit Ethernet - Windows 7 Pro / XP Pro downgrade - pre-installed: Windows XP - Monitor : none - Microsoft Office Ready