Dell Optiplex 9020 Mini Tower Desktop i7 i7-4790 Quad-Core 16GB RAM 2TB Hard Drive 1G AMD Radeon HD 8490 16X DVD +/- RW Windows 7 Professional (Includes Windows 8.1 Pro license) Processor: Intel Core 4th Generation i7-4790 Processor (Quad Core, 3.6GHz, 8MB Cache) 16GB Dual Channel DDR3 at 1600Mhz, 1 TB SATA Hard Drive (7200 RPM) Primary Drive+1TB (7200 RPM) SATA Hard Drive Second Drive 1G AMD Radeon HD 8490, 16X DVD +/- RW Drive Windows 7 Professional 64 bit (Includes Windows 8.1 Pro license) 3 years Dell Warranty