Specifications Compared
| Spec | A100 SXM4 80GB | RTX 5090 |
|---|---|---|
| TDP | 400W | 575W |
| VRAM | 80 GB | 32 GB |
| CUDA Cores | 6,912 | 21,760 |
| FP4 (dense) | Not published | 1,676 TFLOPS |
| FP8 (dense) | Not published | 419 TFLOPS |
| Memory Type | HBM2e | GDDR7 |
| Architecture | Ampere | Blackwell |
| FP16 (dense) | 312 TFLOPS | 209.5 TFLOPS |
| Form Factors | SXM4 | PCIe |
| INT8 (dense) | 624 TOPS | 838 TOPS |
| Interconnect | NVLink, PCIe 4.0, InfiniBand | PCIe 5.0 |
| Tensor Cores | 432 | 680 |
| FP32 Performance | 19.5 TFLOPS | 104.8 TFLOPS |
| FP64 Performance | 9.7 TFLOPS | 1.6 TFLOPS |
| Memory Bandwidth | 2,039 GB/s | 1,792 GB/s |
| FP4 (with sparsity) | Not published | 3,352 TFLOPS |
| FP8 (with sparsity) | Not published | 838 TFLOPS |
| FP16 (with sparsity) | 624 TFLOPS | 419 TFLOPS |
| INT8 (with sparsity) | 1,248 TOPS | 1,676 TOPS |
Performance Analysis
The A100 SXM4 80GB delivers 312 TFLOPS in dense FP16 while the RTX 5090 delivers 209.5 TFLOPS in dense FP16. This dense FP16 difference means the A100 SXM4 80GB processes larger matrix operations per second in training scenarios that rely on dense precision. The RTX 5090 reaches 104.8 TFLOPS in FP32 compared to the A100 SXM4 80GB at 19.5 TFLOPS in FP32 which favors the RTX 5090 for single precision scientific tasks. Memory bandwidth stands at 2039 GB/s for the A100 SXM4 80GB family and 1792 GB/s for the RTX 5090 family so the A100 SXM4 80GB supports larger batch sizes in memory intensive inference without swapping. Both variants share their family tensor figures as context for dense versus sparsity modes yet the A100 SXM4 80GB maintains an advantage in dense FP16 throughput for equivalent sparsity comparisons.
Current On-Demand Offers
Cheapest secure on-demand offer per provider that is reported in stock right now, per GPU per hour; multi-GPU instances show the whole-instance price alongside. Deploy opens the DeployGPU console for providers on the platform, otherwise the provider's own site. Stock is rechecked every minute.
A100 SXM4 80GB
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| LeaderGPU | The Netherlands | 8 | $0.68 | $5.42 | Deploy |
| Vast.ai | Czechia, CZ | 1 | $0.73 | — | Deploy |
| ThunderCompute | USA | 2 | $1.09 | $2.18 | Deploy |
| Hyperstack | CANADA-1 | 1 | $1.35 | — | Deploy |
| Massed Compute | us-central-3 | 1 | $1.35 | — | Deploy |
10 providers in stock, 36 offers (cheapest per provider shown). All A100 SXM4 80GB offers, price history and alerts
RTX 5090
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| Vast.ai | Alberta, CA | 8 | $0.87 | $6.93 | Deploy |
| LeaderGPU | The Netherlands | 1 | $2.29 | — | Deploy |
2 providers in stock, 7 offers (cheapest per provider shown). All RTX 5090 offers, price history and alerts
Notify me when A100 SXM4 80GB drops below a price
One email when the cheapest in-stock on-demand price per GPU-hour falls below your threshold. Cheapest right now: $0.68/GPU-hr.
QuantaCloud
Comparing A100 providers? We broker across all of them.
Need 16+ A100s reserved for fine-tuning, simulation, or production inference? We quote volume pricing across multiple data center partners: one quote at partner rates, 24h turnaround.
When to Choose the A100 SXM4 80GB
The A100 SXM4 80GB suits scenarios that demand 80 GB HBM2e capacity for models exceeding 32 GB limits. Its 400W TDP and NVLink interconnect enable multi GPU scaling in data center environments where the 2039 GB/s bandwidth sustains high throughput for large batch training.
When to Choose the RTX 5090
Use Cases
The A100 SXM4 80GB provides 80 GB HBM2e memory and 312 dense FP16 TFLOPS which support training runs that exceed 32 GB limits.
The A100 SXM4 80GB maintains 2039 GB/s bandwidth and 624 dense INT8 TOPS which allow sustained inference on models larger than 32 GB.
The A100 SXM4 80GB offers 80 GB capacity and NVLink interconnect which enable fine tuning of models that require more memory than the RTX 5090 32 GB provides.
The RTX 5090 delivers 104.8 FP32 TFLOPS which accelerates diffusion workloads that fit in 32 GB GDDR7 and do not require the 80 GB of the A100 SXM4 80GB.
The RTX 5090 achieves 104.8 FP32 TFLOPS compared to 19.5 FP32 TFLOPS on the A100 SXM4 80GB which benefits single precision scientific simulations within 32 GB.
Frequently Asked Questions
How do the FP16 dense figures compare between these two GPUs?▾
The A100 SXM4 80GB reaches 312 TFLOPS in dense FP16 and the RTX 5090 reaches 209.5 TFLOPS in dense FP16. Direct comparison uses only dense values to maintain consistency.
What TDP values apply to the A100 SXM4 80GB and RTX 5090?▾
The A100 SXM4 80GB operates at 400W TDP and the RTX 5090 operates at 575W TDP. These power figures come from the respective family specifications.
Which interconnect options exist on the A100 SXM4 80GB versus the RTX 5090?▾
The A100 SXM4 80GB supports NVLink and PCIe 4.0 while the RTX 5090 supports PCIe 5.0. The form factor difference limits multi GPU scaling on the RTX 5090.
How does memory bandwidth differ for these specific variants?▾
The A100 SXM4 80GB family provides 2039 GB/s bandwidth and the RTX 5090 family provides 1792 GB/s bandwidth. These shared family values influence data movement rates in both cases.
Which is cheaper to rent, the A100 SXM4 80GB or the RTX 5090?▾
Cloud rental prices for both the A100 SXM4 80GB and RTX 5090 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.
How much VRAM does the A100 SXM4 80GB have compared to the RTX 5090?▾
The A100 SXM4 80GB has 80 GB of HBM2e memory. The RTX 5090 has 32 GB of GDDR7 memory.
Can I find A100 SXM4 80GB and RTX 5090 GPUs available to rent right now?▾
Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.
What is the main difference between the A100 SXM4 80GB and the RTX 5090?▾
The A100 SXM4 80GB uses the Ampere architecture (2020) while the RTX 5090 uses Blackwell (2025). The A100 SXM4 80GB delivers 1.5x the dense FP16 throughput (312 vs 209.5 TFLOPS, both without sparsity) and 1.1x the memory bandwidth of the RTX 5090.
Rent these GPUs
Each GPU page lists every current on-demand offer by provider, per GPU-hour, updated every minute.
Related comparisons
How this page is made
- Specifications come from the NVIDIA, AMD and Intel datasheets for the A100 SXM4 80GB and the RTX 5090. Dense and sparse throughput are listed separately.
- Prices and availability are live: every offer shown is an in-stock, on-demand listing from a provider we track, rechecked every minute.
- The written comparison (overview, performance notes, when to choose each card, verdict, use cases and FAQ) was drafted with an AI model from the specification table above and passed an automated check that rejects any figure not in that table. It was last generated on . It contains no prices; those are always read live.
- Read how we collect the data, or report an error on this page.
Next steps
- Rent A100Every current offer by provider, daily price history and a price alert.
- Rent RTX 5090Every current offer by provider, daily price history and a price alert.
- GPU price indexHow on-demand prices for the major GPUs have moved, updated daily.
- All GPUsEvery GPU we track, with current lows and provider counts.