H100 PCIe 80GB vs A100 PCIe 40GB
Compare NVIDIA H100 PCIe 80GB and NVIDIA A100 PCIe 40GB specs, performance, and cloud pricing
H100 PCIe 80GB
80GB
From $1.68/hr
A100 PCIe 40GB
40GB
From $0.850/hr
Architecture
Hopper
vs Ampere
FP16 Gap
2.4x
H100 PCIe 80GB leads
| Specification | H100 PCIe 80GB | A100 PCIe 40GB |
|---|---|---|
| VRAM | 80 GB | 40 GB |
| VRAM Type | HBM3 | HBM2e |
| FP16 TFLOPS | 1.5 PFLOPS | 624 TFLOPS |
| FP8 TFLOPS | 3.0 PFLOPS | N/A |
| Memory Bandwidth | 2.0 TB/s | 1.6 TB/s |
| TDP | 350W | 250W |
| Interconnect | PCIe Gen5 | PCIe Gen4 |
| Architecture | Hopper | Ampere |
Price Comparison
| Metric | H100 PCIe 80GB | A100 PCIe 40GB |
|---|---|---|
| Cheapest On-Demand | $1.68/hr | $0.850/hr |
| Cheapest Spot | $1.25/hr | $0.480/hr |
| Providers Available | 5 | 4 |
Verdict
Best for Training
NVIDIA H100 PCIe 80GB
1.5 PFLOPS FP16 with 80GB VRAM
Best Value
NVIDIA H100 PCIe 80GB
901 TFLOPS per $/hr
Best for Inference
NVIDIA H100 PCIe 80GB
3.0 PFLOPS FP8/FP16
Use-Case Recommendations
Large-Scale Training
Training LLMs and large multi-modal models
Winner
H100 PCIe 80GB
1.5 PFLOPS FP16 with 80GB HBM3 provides the best training throughput.
Inference at Scale
Deploying models in production for real-time inference
Winner
H100 PCIe 80GB
3.0 PFLOPS FP8/FP16 gives superior inference throughput.
Budget-Conscious Workloads
Getting the best performance per dollar
Winner
H100 PCIe 80GB
Starting at $1.68/hr delivers the best TFLOPS per dollar.