COMPARE / A100 40GB SXM VS H100 SXM
A100 40GB SXM vs H100 SXM
Specs from the chip makers' datasheets; prices from the live Compute Cafe panel, refreshed hourly. Every rate is an on-demand published price with a source receipt.
CHEAPEST A100 40GB SXM
$1.000/hr
RunPod · median $4.08 · 4 providers
CHEAPEST H100 SXM
$0.890/hr
SpotGPUs · median $5.49 · 77 providers
CHEAPER RIGHT NOW
H100 SXM
live panel, 2026-09-27
| A100 40GB SXM | H100 SXM | |
|---|---|---|
| MAKER | NVIDIA | NVIDIA |
| ARCHITECTURE | Ampere | Hopper |
| LAUNCHED | 2020 | 2022 |
| MEMORY | 40 GB HBM2 | 80 GB HBM3 |
| MEMORY BANDWIDTH | 1,555 GB/s | 3.35 TB/s |
| TENSOR COMPUTE | 312 TFLOPS FP16/BF16 tensor dense (624 sparse) | 989 TFLOPS FP16/BF16 tensor dense (1,979 sparse); 1,979 TFLOPS FP8 dense |
| POWER DRAW | 400 W (SXM4) | 700 W |
| INTERCONNECT | NVLink 3.0 600 GB/s | NVLink 4.0 900 GB/s |
HOW TO CHOOSE
A100 40GB SXM vs H100 SXM
The H100 triples dense FP16 throughput and adds FP8 at roughly 2-3x the hourly rate. For FP16 work that fits in 40 GB, the A100 40GB is often the better cost per step.
Workload fit
A100 40GB SXM: mid-size fine-tuning, batch inference, 70b-class serving. H100 SXM: llm pre-training, 70b+ fine-tuning, high-throughput inference.
A100 40GB SXM VS H100 SXM - FAQ
Which is cheaper to rent, A100 40GB SXM or H100 SXM?
By today's published on-demand rates: A100 40GB SXM starts at $1.000/GPU/hr (median $4.08, 4 providers) and H100 SXM starts at $0.890/GPU/hr (median $5.49, 77 providers). The cheapest live listing is the H100 SXM at SpotGPUs. Figures recompute from the panel on every refresh.
A100 40GB SXM or H100 SXM - which should I rent?
A100 40GB SXM: The 40 GB SXM A100 is the original 2020 Ampere flagship module: same silicon and tensor throughput as the 80 GB part, half the memory and bandwidth. H100 SXM: The H100 SXM is the chip the current generation of frontier models was trained on, and the benchmark every other datacenter GPU is priced against. The side-by-side spec table and live price rows above give the full picture.
Where can I rent A100 40GB SXM and H100 SXM?
4 providers publish A100 40GB SXM rates and 77 publish H100 SXM rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.
Full pricing: A100 40GB SXM · H100 SXM · all comparisons