AMD Next-Generation Breakthrough (MI400 Series & "Helios")To counter NVIDIA's Blackwell (which scales up to 72 GPUs via NVSwitch), AMD introduced a major architectural shift:72-GPU Scale-Up Domains: AMD's next-generation Instinct MI400 series powers the "Helios" rack-scale AI platform.
Instinct MI300 and MI325X Series: AMD uses a proprietary switched scale-up network called Infinity Fabric. In typical HGX-style server configurations, it seamlessly binds 8 AMD GPUs together into a single cohesive compute