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CDNA-Next flagship: 432GB HBM4 and 40 PFLOPS FP4
Pros
- Highest memory capacity in class
- More than 2x MI355X bandwidth
- Strong FP4 inference numbers
- Rack-scale ambitions vs NVIDIA
Cons
- H2 2026 availability
- Premium flagship pricing
- ROCm maturity gap remains
- Requires advanced cooling
✓ Where it shines / best for
- Frontier inference/training
- Largest-context LLMs
- Hyperscaler AI clouds
- Rack-scale Helios deployments
✕ Not the best fit for
- Early adopters needing it now
- CUDA-only shops
- Budget clusters
- Edge
Features
- ✓ CDNA-Next architecture
- ✓ 432GB HBM4, 19.6 TB/s
- ✓ 40 PFLOPS FP4 / 20 PFLOPS FP8 per chip
- ✓ TSMC 2nm compute chiplets
- ✓ 16 HBM4 stacks
- ✓ Designed for rack-scale Helios systems
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| MI455X accelerator | ~$35,000-$45,000 | one-time | Analyst estimate; flagship positioning |
Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.
Specifications
| use | Data center training and inference |
| power | ~1,400W+ |
| memory | 432GB HBM4, 19.6 TB/s |
| performance | 40 PFLOPS FP4 / 20 PFLOPS FP8 |
| architecture | CDNA-Next (TSMC 2nm compute + 3nm I/O) |
Sponsored
A full review is being generated for this product and will appear here shortly.