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AMD Instinct MI440X vs AMD Instinct MI455X
Side-by-side comparison of specifications, performance, and efficiency.
AMD Instinct MI440X
Architecture
CDNA 5
Year
2026
AMD Instinct MI455X
Architecture
CDNA 5
Year
2026
VRAM
432 GB
Specifications
AMD Instinct MI440X AMD Instinct MI455X
Architecture
CDNA 5 CDNA 5
Launch Year
2026 2026
Form Factor
OAM OAM
VRAM
—432 GB
Memory Bandwidth
—23.3 TB/s
TDP
——
Process Node
— —
| Spec | AMD Instinct MI440X | AMD Instinct MI455X |
|---|---|---|
| Architecture | CDNA 5 | CDNA 5 |
| Launch Year | 2026 | 2026 |
| Form Factor | OAM | OAM |
| VRAM | — | 432 GB |
| Memory Bandwidth | — | 23.3 TB/s |
| TDP | — | — |
| Process Node | — | — |
Performance (TFLOPS)
AMD Instinct MI440X AMD Instinct MI455X
FP8
—20132.7 TFlops
| Precision | AMD Instinct MI440X | AMD Instinct MI455X |
|---|---|---|
| FP8 | — | 20132.7 TFlops |
FLOPS by Precision
Efficiency — TDP vs FP32 Performance
Analysis
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