AMD MI355X Outperforms NVIDIA B200 on Kimi K3 AI Model, Delivering 3.8× Throughput at Lower Cost
AMD's MI355X GPUs are outperforming NVIDIA's B200 on the massive 2.8 trillion parameter Kimi K3 AI model, delivering 3.8× higher throughput per node at roughly 2.4× lower cost, thanks to key engineering fixes including speculative decoding patches and attention head optimizations that cut prefill times by up to 3×.