Sony VPCJ23S1E. Processor model: Intel Core i3-2350M, L3 cache: 3 MB. Internal memory: 4 GB, Memory clock speed: 1333 MHz. Hard drive capacity: 750 GB, Hard drive rotational speed: 5400 RPM. Discrete graphics adapter model: Intel HD Graphics 3000 AMD Radeon HD 6470M. Built-in microphone: Internal, Monaural microphone