A100 40GB SXM vs A100 80GB

A100 40GB SXM vs A100 80GB

Same compute, double the memory and 31% more bandwidth. If the model fits in 40 GB the cheaper 40 GB part is the same speed; if it does not, no discount compensates.

Workload fit

A100 40GB SXM: mid-size fine-tuning, batch inference, 70b-class serving. A100 80GB: fine-tuning, large-model inference, mig multi-tenant serving.

Which is cheaper to rent, A100 40GB SXM or A100 80GB?

By today's published on-demand rates: A100 40GB SXM starts at $1.000/GPU/hr (median $4.08, 4 providers) and A100 80GB starts at $0.292/GPU/hr (median $1.60, 36 providers). The cheapest live listing is the A100 80GB at AIC Cloud. Figures recompute from the panel on every refresh.

A100 40GB SXM or A100 80GB - 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. A100 80GB: The 80 GB A100 in either form factor is the market's reference point for large-model work: enough HBM to fine-tune 70B-class models, enough bandwidth to keep tensor cores fed, and a huge installed base that keeps hourly rates competitive. The side-by-side spec table and live price rows above give the full picture.

Where can I rent A100 40GB SXM and A100 80GB?

4 providers publish A100 40GB SXM rates and 36 publish A100 80GB rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.