Home Comparisons RTX 4090 vs A100 SXM4 RTX 4090 or A100: consumer card against data-centre card RTX 4090 is a consumer card with 24 GB and very fast single-user work: image generation and inference of smaller models. A100 is a data-centre card with 80 GB of HBM2e, built for long runs and large models.
Specifications Prices and availability come from the live catalog and update automatically.
Which one to pick Pick RTX 4090 if Stable Diffusion, SDXL and FLUX LLMs up to 32B at int4 the lowest hourly price for 24 GB Pick A100 SXM4 if 70B LLMs at int4 on one card training and fine-tuning with large batches long runs in data-centre conditions Cost example RTX 4090, per hour: about 62 ₽ A100 SXM4, per hour: about 172 ₽ Estimate at the current per-GPU hourly price. Billed per minute, the price is fixed at launch.
Questions and answers
Which card should I use for image generation? Usually the RTX 4090: it is fast for single-user generation, and 24 GB covers SDXL and FLUX fp8.
Do I need an A100 for a 70B model? Yes. At int4 a 70B model takes about 42 GB, which fits an 80 GB A100 but not a 24 GB card.