Specifications Compared
| Spec | A100 PCIe 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 | PCIe | PCIe |
| INT8 (dense) | 624 TOPS | 838 TOPS |
| Interconnect | PCIe 4.0, InfiniBand; NVLink only via a bridge between card pairs | 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 FP16 dense figure of 312 TFLOPS on the A100 exceeds the FP16 dense figure of 209.5 TFLOPS on the RTX 5090 while the FP32 figure of 19.5 TFLOPS on the A100 falls below the FP32 figure of 104.8 TFLOPS on the RTX 5090. These dense to dense comparisons indicate the A100 handles certain precision workloads at higher throughput rates yet the RTX 5090 advances single precision tasks. Memory bandwidth of 2039 GB/s shared across A100 variants versus 1792 GB/s shared across RTX 5090 variants influences maximum batch sizes with the higher bandwidth supporting larger batches in memory intensive operations.
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 PCIe 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 | 1 | $1.09 | — | Deploy |
| Hyperstack | CANADA-1 | 1 | $1.35 | — | Deploy |
| Massed Compute | us-east-1 | 1 | $1.38 | — | Deploy |
9 providers in stock, 33 offers (cheapest per provider shown). All A100 PCIe 80GB offers, price history and alerts
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One email when the cheapest in-stock on-demand price per GPU-hour falls below your threshold. Cheapest right now: $0.68/GPU-hr.
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When to Choose the A100 PCIe 80GB
The A100 PCIe 80GB suits workloads that require the 80 GB memory capacity for models exceeding 32 GB. Its 400W TDP also favors deployments where power limits constrain operations compared to the 575W TDP of the RTX 5090.
When to Choose the RTX 5090
The RTX 5090 suits workloads that utilize its FP32 performance of 104.8 TFLOPS for single precision computations. Its PCIe 5.0 interconnect further supports newer system integrations over the PCIe 4.0 interconnect of the A100 PCIe 80GB.
Use Cases
The 80 GB memory capacity on the A100 PCIe 80GB accommodates larger models than the 32 GB capacity on the RTX 5090.
The FP32 performance of 104.8 TFLOPS on the RTX 5090 exceeds the 19.5 TFLOPS on the A100 for certain inference pipelines.
The 80 GB memory capacity on the A100 PCIe 80GB supports fine-tuning of models that exceed 32 GB.
Both GPUs handle image generation tasks with the A100 offering more memory and the RTX 5090 offering higher FP32 throughput.
The FP32 performance of 104.8 TFLOPS on the RTX 5090 provides an advantage over the 19.5 TFLOPS on the A100.
Frequently Asked Questions
What are the TDP values for the A100 PCIe 80GB and RTX 5090?▾
The A100 PCIe 80GB carries a TDP of 400W as a family figure. The RTX 5090 carries a TDP of 575W as a family figure.
How do FP16 dense figures compare on these GPUs?▾
The A100 delivers 312 TFLOPS FP16 dense as a family figure. The RTX 5090 delivers 209.5 TFLOPS FP16 dense as a family figure.
Which GPU offers higher memory bandwidth?▾
The A100 provides 2039 GB/s memory bandwidth as a family figure. The RTX 5090 provides 1792 GB/s memory bandwidth as a family figure.
What interconnects do the A100 PCIe 80GB and RTX 5090 use?▾
The A100 PCIe 80GB uses PCIe 4.0. The RTX 5090 uses PCIe 5.0.
Which is cheaper to rent, the A100 PCIe 80GB or the RTX 5090?▾
Cloud rental prices for both the A100 PCIe 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 PCIe 80GB have compared to the RTX 5090?▾
The A100 PCIe 80GB has 80 GB of HBM2e memory. The RTX 5090 has 32 GB of GDDR7 memory.
Can I find A100 PCIe 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 PCIe 80GB and the RTX 5090?▾
The A100 PCIe 80GB uses the Ampere architecture (2020) while the RTX 5090 uses Blackwell (2025). The A100 PCIe 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 PCIe 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.