AMD MI455X and Helios: 432GB HBM4, 72-GPU Racks, and a Real Answer to Vera Rubin
… Rack metric AMD Helios Vera Rubin NVL72 GPUs 72 MI455X 72 Rubin CPUs 18 Venice 36 Vera HBM capacity 31TB 20.7TB HBM bandwidth 1.7PB/s 1.58PB/s Scale-up per GPU 3.6TB/s 3.6TB/s Rack scale-up 260TB/s 260TB/s Scale-out per GPU 2,400 Gb/s 1,600 Gb/s Scale-up switches 12 Tomahawk 6 36 NVSwitch 6 Rack fo… …