Chip comparison
AMD Instinct MI350 series vs NVIDIA GB300 (Blackwell Ultra)
Side-by-side specs
Straight from each vendor's datasheet. Winner in bold: higher throughput, memory, or transistor count; lower power draw or price. Sparse (2:4) throughput roughly doubles the FP8/INT8 numbers shown.
| Field | AMD Instinct MI350 series | NVIDIA GB300 (Blackwell Ultra) |
|---|---|---|
| Process node | TSMC N3 (chiplet) | TSMC 4NP |
| TDP | 1000 W | 1400 W |
| Memory | 288 GB HBM3e | 288 GB HBM3e |
| Memory bandwidth | 8,000 GB/s | 8,000 GB/s |
| FP16 (dense) | 2,300 TFLOPS | — |
| BF16 (dense) | 2,300 TFLOPS | — |
| FP8 (dense) | 4,600 TFLOPS | 5,000 TFLOPS |
| INT8 (dense) | 4,600 TOPS | — |
| Form factor | OAM | Superchip (Blackwell Ultra + Grace) |
| Announced | 2025-06-12 | 2025-03-18 |
| Released | 2025-10-01 | 2025-11-01 |
Robots running AMD Instinct MI350 series
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Robots running NVIDIA GB300 (Blackwell Ultra)
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Data centers with AMD Instinct MI350 series
Data centers with NVIDIA GB300 (Blackwell Ultra)
Common questions
AMD Instinct MI350 series vs NVIDIA GB300 (Blackwell Ultra): which is faster for training?
NVIDIA GB300 (Blackwell Ultra) has 1.09x the dense FP8 throughput of the other (AMD Instinct MI350 series: 4,600 TFLOPS; NVIDIA GB300 (Blackwell Ultra): 5,000 TFLOPS). Real-world training speed also depends on memory bandwidth, interconnect, and software stack: see the spec diff for those inputs.
AMD Instinct MI350 series vs NVIDIA GB300 (Blackwell Ultra): which has more memory?
NVIDIA GB300 (Blackwell Ultra) carries more HBM (AMD Instinct MI350 series: 288 GB HBM3e; NVIDIA GB300 (Blackwell Ultra): 288 GB HBM3e). Memory capacity sets the largest model that fits on one chip without partitioning; memory bandwidth sets inference throughput.
AMD Instinct MI350 series vs NVIDIA GB300 (Blackwell Ultra): which is more power-efficient?
Dense FP8 TFLOPS per watt: AMD Instinct MI350 series 4.60 (4,600 ÷ 1000 W); NVIDIA GB300 (Blackwell Ultra) 3.57 (5,000 ÷ 1400 W). AMD Instinct MI350 series wins at the die level; system-level efficiency also depends on cooling and interconnect.
See also: every chip comparison · AMD Instinct MI350 series full page · NVIDIA GB300 (Blackwell Ultra) full page.