AMD Instinct MI325X gets 288GB HBM3e memory, MI350X with CDNA4 set for 2025, MI400 with CDNA-Next launching in 2026

AMD updates its Instinct accelerator roadmap

AMD recently shared an update on its Radeon Instinct MI series, known for data-center accelerators and GPUs. This year, the CDNA3-based MI series will see an upgrade with the MI325X.

AMD has already introduced its MI300A and MI300X accelerators, along with several lesser-known variants for specific regions. The MI325X marks a significant update to the MI family, emphasizing large memory support. This accelerator will incorporate faster HBM3e memory.

Instinct MI325X, Source: AMD

The MI325X will boast 288GB of HBM3e memory, which is 96GB more than the MI300X. It also surpasses HBM3 variants in speed by 700 GB/s, reaching up to 6.0 TB/s. It retains the same architecture, utilizing a combination of 5nm and 6nm nodes.

Instinct MI350, Source: AMD

Looking ahead, the MI350X will be an updated CDNA4 product using a 3nm node. It will also feature 288GB of HBM3e memory and introduce support for FP4/FP6 datatype, beneficial for machine learning inference. Additional details are scarce, but it will be OAM compatible. The MI350X is to deliver 35X AI inference boost compared to CDNA3, wile CDNA3 only provided 8x the uplift.

CDNA4 and CDNA3 updates, Source: AMD

The MI325X is scheduled for release in the fourth quarter of this year, while the MI350 is expected in 2025. Additionally, AMD announced that the MI400, featuring the CDNA-Next architecture, will arrive in 2026.