AMD Instinct MI400

AMD Instinct MI400 aims to be the first AMD GPU to win Tier 1 cloud model training, using TSMC's 3nm process and 192GB of HBM4 memory for 4.5x the bandwidth of the MI300X. With ROCm software achieving 95% CUDA parity on common training frameworks, it directly challenges NVIDIA's Blackwell architecture—delivering 30% lower power-per-watt than the average rival. This outperforms #8's memory capacity by offering 192GB, 33% more than the runner-up, while targeting a $15K price point, cheaper than the typical enterprise AI accelerator.