Kaushik Roy, a Purdue professor, discusses efficient hardware for neural networks, focusing on matrix-vector multiplication and exponential functions. He addresses challenges like the "memory wall" and explores in-memory computing with non-volatile memories (e.g., MTJs, RRAM, PCM) to mimic neural processes. These devices offer benefits like smaller cell area and better energy efficiency but have latency and endurance trade-offs. It highlights the role of approximations, stochasticity, and neuromorphic devices. Specialized memory-based accelerators are presented as a potential solution for efficient computation.