Blackwell B200 vs Instinct MI300X
Complete side-by-side comparison of specs, performance, memory, power efficiency, and pricing.
Blackwell B200
89
Spec Wins
Instinct MI300X
65
Detailed Specifications
Blackwell B200 — Best For
Instinct MI300X — Best For
Who Should Choose Each GPU?
Choose Blackwell B200 if you…
- ✓Need maximum CUDA/TensorRT/vLLM ecosystem compatibility
- ✓Prioritize raw FP8 throughput (4,500 vs 2,614 TFLOPS)
- ✓Running Frontier Training workloads
- ✓Running AGI Research workloads
Choose Instinct MI300X if you…
- ✓Have power-constrained data centers (750W vs 1000W TDP)
- ✓Working with a tighter CapEx budget (lower list price)
- ✓Running Large Models workloads
- ✓Running Cost-Effective Training workloads
Verdict
The Blackwell B200 and Instinct MI300X target different priorities. Both GPUs offer the same 192GB VRAM, so the decision comes down to ecosystem and compute throughput. For training throughput, the Blackwell B200's 4,500 FP8 TFLOPS outpaces the Instinct MI300X's 2,614 TFLOPS. Teams already invested in the NVIDIA/CUDA ecosystem will have less friction with the Blackwell B200, while teams open to ROCM can benefit from the Instinct MI300X's advantages. Use our TCO Calculator to model the full 3-year cost difference for your specific utilization and power costs.
Blackwell B200 vs Instinct MI300X: Common Questions
Which is faster, Blackwell B200 or Instinct MI300X?+
In FP8 throughput, the Blackwell B200 leads with 4,500 TFLOPS vs 2,614 TFLOPS. For LLM inference, memory capacity and bandwidth often matter more than raw TFLOPS — the Instinct MI300X has more VRAM (192GB).
Is Blackwell B200 or Instinct MI300X better for LLM training?+
For LLM training at scale, the Blackwell B200 has higher raw throughput. However, the choice also depends on your software stack: Blackwell B200 offers CUDA compatibility with the widest framework support (PyTorch, JAX, TensorRT).
What is the price difference between Blackwell B200 and Instinct MI300X?+
The Blackwell B200 is estimated at $35,000 per unit and the Instinct MI300X at $15,000. Actual pricing varies by vendor, volume, and configuration. Check our Buy page for current reseller pricing.
Which GPU is more power efficient, Blackwell B200 or Instinct MI300X?+
The Instinct MI300X has a lower TDP (750W vs 1000W). Performance-per-watt depends on your workload — for FP8 inference, divide TFLOPS by TDP: Blackwell B200 = 4.5 TFLOPS/W vs Instinct MI300X = 3.5 TFLOPS/W.