Samsung NP700Z5B-W01UB Notebook 15.6" Laptop (Intel Core i7 Processor 2675QM, 6GB Memory, 750GB Hard Drive) Silver 2nd Gen Intel Core i7-2675QM processor 6GB Memory, 750GB Hard drive Multiformat DVDRW/CD-RW drive with double-layer support; Records up to 8.5GB of data or 4 hours of video using compatible DVD+R DL and DVD-R DL media 15.6" LED-backlit high-definition widescreen display with 300 cd/m brightness and 1600 x 900 resolution delivers intense detail and clarity. Microsoft Windows 7 Home Premium Edition 64-bit operating system preinstalled