DESC: Operating System Genuine Windows 7 Home Premium 64-bit, SP1, Processor and Graphics: Intel Core i5-2430M Processor, 2.4GHz (3.0 GHz with Turbo Boost Technology), 3MB L3 Cache, Mobile Intel HM65 Express Chipset, NVIDIA GeForce GT 540M with NVIDIA Optimus Technology featuring 1GB of GDDR3 discrete graphics memory, NVIDIA Optimus technology automatically switches graphics. Total available graphics memory = 4095MB; Memory: Configured with 6GB DDR3 1333MHz (max 8GB), 2 main memory slots. Storage Drive 750GB (5400 RPM) Serial ATA hard disk drive, TOSHIBA Hard Drive Impact Sensor (3D sensor).