We can't imagine how this might have slipped your attention, but LG and Motorola used this year's CES to roll out the smartphone world's first dual-core devices in the shape of the Atrix 4G and Optimus 2X. Both are built around NVIDIA's 1GHz Tegra 2 chip, which has been the most popular thing out here in Vegas after the free food and shuttle rides (Moto even has the Droid Bionic, a 4.3-incher
