Ada L40S vs Instinct MI300A
Complete side-by-side comparison of specs, performance, memory, power efficiency, and pricing.
Ada L40S
53
Spec Wins
Instinct MI300A
56
Detailed Specifications
Ada L40S — Best For
Instinct MI300A — Best For
Who Should Choose Each GPU?
Choose Ada L40S if you…
- ✓Need maximum CUDA/TensorRT/vLLM ecosystem compatibility
- ✓Have power-constrained data centers (350W vs 550W TDP)
- ✓Working with a tighter CapEx budget (lower list price)
- ✓Running Inference workloads
- ✓Running Video AI workloads
Choose Instinct MI300A if you…
- ✓Need more VRAM (128GB vs 48GB) for large model inference
- ✓Prioritize raw FP8 throughput (1,457 vs 733 TFLOPS)
- ✓Running HPC workloads
- ✓Running Integrated CPU+GPU workloads
Verdict
The Ada L40S and Instinct MI300A target different priorities. The Instinct MI300A's 128GB of HBM3 gives it a clear edge for large-model inference where fitting the full model in VRAM eliminates quantization overhead. For training throughput, the Instinct MI300A's 1,457 FP8 TFLOPS outpaces the Ada L40S's 733 TFLOPS. Teams already invested in the NVIDIA/CUDA ecosystem will have less friction with the Ada L40S, while teams open to ROCM can benefit from the Instinct MI300A's advantages. Use our TCO Calculator to model the full 3-year cost difference for your specific utilization and power costs.
Ada L40S vs Instinct MI300A: Common Questions
Which is faster, Ada L40S or Instinct MI300A?+
In FP8 throughput, the Instinct MI300A leads with 1,457 TFLOPS vs 733 TFLOPS. For LLM inference, memory capacity and bandwidth often matter more than raw TFLOPS — the Instinct MI300A has more VRAM (128GB).
Is Ada L40S or Instinct MI300A better for LLM training?+
For LLM training at scale, the Instinct MI300A has higher raw throughput. However, the choice also depends on your software stack: Ada L40S offers CUDA compatibility with the widest framework support (PyTorch, JAX, TensorRT).
What is the price difference between Ada L40S and Instinct MI300A?+
The Ada L40S is estimated at $8,000 per unit and the Instinct MI300A at $14,000. Actual pricing varies by vendor, volume, and configuration. Check our Buy page for current reseller pricing.
Which GPU is more power efficient, Ada L40S or Instinct MI300A?+
The Ada L40S has a lower TDP (350W vs 550W). Performance-per-watt depends on your workload — for FP8 inference, divide TFLOPS by TDP: Ada L40S = 2.1 TFLOPS/W vs Instinct MI300A = 2.6 TFLOPS/W.