AMD unveils Instinct MI400 GPUs for 2026
AMD disclosed plans for its Instinct MI400 accelerator series built on CDNA 5 architecture during a financial analyst presentation, targeting deployment in 2026 with performance doubling that of the MI350 generation. The company said the lineup will deliver 40 FP4 and 20 FP8 petaflops while incorporating HBM4 memory configurations reaching 432 gigabytes alongside bandwidth expansion to 19.6 terabytes per second through a 300 gigabyte-per-second scale-out connection.
Two models will form the core offering: the MI455X, designed for cloud-based artificial intelligence training, and the MI430X equipped with native FP64 capabilities for high-performance computing applications. Both variants adopt CoWoS-L packaging, replacing earlier interconnect methods to improve thermal management. CEO Lisa Su indicated that AMD would supply partners immediately upon launch to avoid distribution constraints.
The company positioned the series against competing Vera Rubin accelerators from NVIDIA, claiming advantages in memory capacity and cluster scalability. AMD confirmed an annual release schedule moving forward, with MI500 development already underway for 2027 availability aligned with EPYC server processor updates.
