Legacy Intel® Core™ Processor Intel Core i3-2xxx Alienware X51, 3.3 GHz, Intel® Core™ i3, 4 GB, 1 TB, DVD Super Multi DL, Windows 7 Home Premium Alienware X51. Processor frequency: 3.3 GHz, Processor family: Intel® Core™ i3, Processor model: i3-2120. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 1 TB, Optical drive type: DVD Super Multi DL. On-board graphics card model: Intel® HD Graphics 2000, Discrete graphics card model: NVIDIA® GeForce® GT 545. Operating system installed: Windows 7 Home Premium, Operating system architecture: 64-bit. Power supply: 240 W. Product type: PC. Product color: Black