Karthik presented on artificial intelligence hardware. He discussed how AI requires specialized hardware like TPUs due to the large amounts of data processing required. TPUs can process data for AI applications much faster than CPUs or GPUs, with 25 times more MAC operations and 3.5 times more on-chip memory than GPUs. Some applications of AI hardware include datacenters, consumer electronics, and edge devices. The market for AI hardware is expected to reach $109 billion by 2025.