Sony VAIO VPC-F121GX/B 16.4" Notebook (1.73GHz Intel Core 2 Quad i7-740QM 4GB RAM 500GB HDD Blu-ray Read Only Microsoft Windows 7 Professional 64-bit) Sony VPC-F121GX/B Core i7-740QM 1.73 GHz 16.4-inch Notebook General Features: Black and titanium color scheme Microsoft Windows 7 Professional 64-bit pre-installed w/CoA 6-Cell Li-ion battery Intel Core i7-740QM Quad-Core 1.73 GHz CPU 4 GB DDR3 1333 MHz SDRAM (supports up to 8 GB, actual available memory may be less) 500 GB Serial ATA hard drive