HP Tower Desktop Get reliable performance from the AMD A4-5000 quad-core processor 4GB memory  For multitasking power, supports up to 16GB 500GB SATA hard drive has plenty of space to store your digital albums, music library and rich media files Enhanced viewing with the integrated AMD Radeon HD 8330 graphics SuperMulti DVDRW drive  watch movies on your computer; read and write CDs and DVDs in multiple formats The front-panel's USB ports make it easy to transfer photos, music, and other files to and from your digital camera and other peripheral devices Windows 7 Professional was designed for on-the-go working professionals. Connect to networks in three clicks, automatically find preferred network printers, give professional presentations, and use business programs with Windows XP Mode Windows 7 Professional (64-bit) Installed; Comes with Windows 8 Professional (64-bit) license