According to SemiAnalysis, which recently released its InferenceX benchmark comparing the inference performance of the latest AI accelerators, AMD's next-generation Instinct MI455X accelerators, designed to compete with NVIDIA's "Vera Rubin," are facing serious manufacturing difficulties, causing delays in AMD's roadmap execution. Only low-volume production will occur this year, while customers will be generating AI tokens in Q2 2027. This means that NVIDIA's "Vera Rubin" VR200 rack-scale system will be the most powerful system shipping this summer, without competition. As AMD's first rack-scale system, the "Helios" AI rack with the MI455X UALoE72 configuration packs 72 GPUs and 6th Gen AMD EPYC "Venice" CPUs in a heterogeneous system designed to run as a single homogeneous GPU, delivering massive AI performance with multi-ExaFLOP compute output.

SemiAnalysis Engineering samples and low volume production of AMD's first rack scale MI455X UALoE72 system will be in H2 2026 while due to manufacturing delays, the mass production ramp and first production tokens will only be generated on an MI455X UALoE72 by Q2 2027.