Core Viewpoint - The launch of the "Colossus 2" supercomputer for Grok marks a significant advancement in computing power, being the world's first gigawatt-level training cluster, with plans for an upgrade to 1.5 gigawatts in April [1] Group 1 - The "Colossus 2" supercomputer has officially commenced operations [1] - This supercomputer is recognized as the first of its kind to achieve gigawatt-level capabilities [1] - An upgrade to 1.5 gigawatts is scheduled for April [1]