Lenovo Essential G780 Laptop

Lenovo Essential G780 Laptop has two models, 21829RU and 21829TU. For 21829RU processor is 3rd Generation Intel Core i7-3520M Processor( 2.90GHz 1600MHz 4MB) and for 21829TU processor is 3rd Generation Intel Core i7-3632QM Processor( 2.20GHz 1600MHz 6MB). RAM is same for these two model which is 8.0GB PC3-12800 DDR3 SDRAM 1600 MHz. Webcam (HD 720p Camera) and storage space (1TB 5400 rpm) quality are also same. Operating System for these two model is 64 bit Windows 8. Graphics for 21829RU is Intel HD Graphics 4000 and for 21829TU is NVIDIA GeForce GT630 2GB. In 21829TU model optical drive is Blu-ray but in 21829RU optical drive is DVD-RW.