Dell Alienware Area-51 Gaming Machine (3.8 GHz Intel Core i7-5820K 6-cores Processor, 16GB DDR4 RAM, 2TB SSD, 18TB HDD, Windows 7 Professional) Intel Core i7-5820K Haswell-E Processor (6-cores, 15MB Cache, Overclocked up to 3.8 GHz w/ Turbo Boost) Alienware Area-51, Genuine Windows 7 Proffesional 64 bit, Alienware 850 Watt Multi-GPU Approved Power Supply 16GB Dual Channel DDR4 at 2133MHz, 2TB SSD (1TB x 2) SATA III 6.0Gb/s 2.5" Solid State Drive + 18TB (6TB x x3) 7200RPM Serial ATA 6Gb/s Hard Drives, Slot-Loading Dual Layer DVD/CD Burner Dual NVIDIA GeForce GTX Titan Z graphics with 12GB GDDR5 - NVIDIA SLI Enabled (2 x HDMI, 2xDisplay Port, 4 x DVI), Keyboard and Mouse Intel 7260 802.11ac 2x2 Wireless, WiFi and Bluetooth 4.0, 1 Year Limited Warranty