HP ProDesk 400 G1 Desktop PC - Intel Core i7-4790 3.60GHz, 8GB DDR3 Memory, 1TB HDD, DVDRW, Intel HD Graphics 4600, Windows 7/8.1 Pro 64-bit w/ 3YR Onsite Warranty ntel Core i7-4790 3.60GHz processor; delivers ultra-fast processing performance 8GB of DDR3 memory; enhances the efficiency of your system 1TB hard drive disk; ensures optimal storage for your files 3YR Onsite Warranty; giving you peace of mind Windows 7/8.1 Pro 64-bit form factor:Mid-Tower