January 6, 2013 at 11:56PM NVIDIA officially unveils Tegra 4: offers quad-core Cortex A15, 72 GPU cores, LTE support
December 18, 2012 at 7:19AM NVIDIA Tegra 4 processor details leaked: 4-plus-1 cores, 28nm, six times the power of Tegra 3
February 23, 2012 at 12:54AM NVIDIA officially brands Tegra 3's five-core quad-core architecture as 4-PLUS-1
