Model
OS Genuine Windows® 7 Home Premium
Genuine Windows® 7 Professional
Genuine Windows® 7 Home Premium
Genuine Windows® 7 Professional
CPU Intel® Core™ i7-2630QM Processor ( 2.0GHz-2.9GHz) Intel® Core™ i7-2630QM Processor ( 2.0GHz-2.9GHz)
Display 15.6" Full HD 1920X1080 LED backlight

15.6" 1366X768 LED backlight, 120hz supports NVIDIA® 3D Vision™

System Memory 2GB/4GB DDRIII, 2 slots (Max 8GB) 2GB/4GB DDRIII, 2 slots (Max 8GB)
Chipset Mobile Intel® HM65 Express Chipset Mobile Intel® HM65 Express Chipset
Video Graphics Intel® HD Graphics 3000
NVIDIA® GeForce® GT550M 2GB
Supports NVIDIA® Optimus™ Technology
NVIDIA® GeForce® GT550M 2GB
Supports NVIDIA® 3D Vision™
Hard Disk Drive 500GB 2.5" 9.5mm SATA HDD 7200rpm 500GB 2.5" 9.5mm SATA HDD 7200rpm
ODD Slim-Body DVD- Super Multi Dual-Layer Drive Slim-Body DVD- Super Multi Dual-Layer Drive
I/O Port
Audio 1.5 Watt Speaker*4, Woofer speaker*1, Internal Microphone 1.5 Watt Speaker*4, Woofer speaker*1, Internal Microphone
Communications 10/100/1000Mbps Ethernet Base-T
802.11b/g/n Wireless
Bluetooth V3.0 + HS
10/100/1000Mbps Ethernet Base-T
802.11b/g/n Wireless
Bluetooth V3.0 + HS
Security Kensington Lock Kensington Lock
Battery Li-ion 6-cell Li-ion 6-cell
Dimensions 392(W) x 263(D) x 27.6-35.1(H) mm 392(W) x 263(D) x 27.6-35.1(H) mm
Weight ~2.6kg (w/ODD and 6-cell battery) ~2.6kg (w/ODD and 6-cell battery)