Cheap LG to Launch Optimus 2X, LG Optimus 2x is world’s first smartphone with a dual-core proccesor – a 1 GHz Nvidia Tegra 2 – also features a 4-inch WVGA screen, 8 GB of memory (expandable up to 32 GB via microSD memory cards), a 1,500 mAh battery, a 8-megapixel rear camera with 1080p recording capabilities and a 1.3-megapixel front camera for video calls.