Sony VPCL22S1E. Processor model: i5-2430M, Processor front side bus: 1333 MHz, L3 cache: 3 MB. Internal memory: 4 GB, Memory clock speed: 1333 MHz. Hard drive capacity: 1000 GB, Hard drive rotational speed: 7200 RPM. Discrete graphics adapter model: NVIDIA GeForce GT 540M GPU. Built-in microphone: Internal, Monaural microphone