Instinct MI325X specs
AMD · Shipping now · first available Feb 2025 (estimated). Dense compute, memory, bandwidth and power from the vendor's documents; each precision stays separate.
All accelerators · Compare with Instinct MI355X
Specifications
| Dense BF16 · FP32 accumulate | 1,307 TFLOPS |
|---|---|
| Dense FP8 · FP32 accumulate | 2,614 TFLOPS |
| Dense FP4 · FP32 accumulate | Not published |
| Memory | 256 GB · HBM |
| Memory bandwidth | 6 TB/s |
| Maximum chip power | 1,000 W |
| Interconnect | Infinity Fabric |
| Process node | TSMC 5/6nm |
| First availability | Feb 2025est — estimated / secondary-source figure |
| Availability | Shipping |
MI300X refresh with HBM3e.
Dense tensor rates with FP32 accumulation, never sparse or FP16-accumulate headline figures. Memory is in decimal GB. The est marker flags a value its vendor-document review did not confirm.
Rent it
No tracked rental quote. The site tracks providers' published list prices; this part may still be rentable under terms it does not record.
Value ratios
| $ per dense BF16 PFLOP-hour | No on-demand quote |
|---|---|
| Dense BF16 TFLOPS per watt | 1.31 |
| Bandwidth bytes per 1,000 BF16 FLOP | 4.59 |
| $ per dense FP8 PFLOP-hour | No on-demand quote |
| Dense FP8 TFLOPS per watt | 2.61 |
| Bandwidth bytes per 1,000 FP8 FLOP | 2.30 |
| $ per GB of memory per hour | No on-demand quote |
Prices divide the cheapest on-demand list price; theoretical ratios do not measure application speed.
Sources
Specifications reviewed . Dense rates, 256 GB HBM3E and 6 TB/s confirmed.