AMD Instinct MI455X
VRAM
432 GB
Memory
HBM4
Bandwidth
19600 GB/s
TDP
-
Suitable Workloads
Large Language Models
Training and inference for models like GPT-4, Llama 70B+
Deep Learning Training
High-performance training for neural networks
High-Throughput Inference
Optimized for batched inference workloads
Enterprise Deployment
Designed for 24/7 datacenter operations
Key Highlights
- Built on CDNA 5 architecture
- OAM form factor
Memory
Compute Performance
Architecture
Power & Physical
Interconnect
Notes
Launched 2026-07-23 at Advancing AI. 40 PF FP4 / 20 PF FP8 dense per AMD (FP16 derived at half FP8). Helios rack platform; shipments ramp from Q4 2026 into H1 2027.
Models That May Fit on AMD Instinct MI455X
Estimates based on INT8 quantization. Actual fit depends on framework and batch size.
Explore More
Added Jul 30, 2026
Last updated: Jul 30, 2026
Your AI stack shouldn't stand still.
Every month new models become cheaper, faster, and more capable. Inferbase ensures your application automatically benefits without changing a single API call.