Specifications Compared
| Spec | RTX 5090 | RTX A4000 |
|---|---|---|
| TDP | 575W | 140W |
| VRAM | 32 GB | 16-20 GB |
| CUDA Cores | 21,760 | 6,144 |
| FP4 (dense) | 1,676 TFLOPS | Not published |
| FP8 (dense) | 419 TFLOPS | Not published |
| Memory Type | GDDR7 | GDDR6 |
| Architecture | Blackwell | Ampere |
| FP16 (dense) | 209.5 TFLOPS | Not published |
| Form Factors | PCIe | PCIe |
| INT8 (dense) | 838 TOPS | Not published |
| Interconnect | PCIe 5.0 | PCIe 4.0 |
| Tensor Cores | 680 | 192 |
| FP32 Performance | 104.8 TFLOPS | 19.2 TFLOPS |
| FP64 Performance | 1.6 TFLOPS | Not published |
| Memory Bandwidth | 1,792 GB/s | 448 GB/s |
| FP4 (with sparsity) | 3,352 TFLOPS | Not published |
| FP8 (with sparsity) | 838 TFLOPS | Not published |
| FP16 (with sparsity) | 419 TFLOPS | 153.4 TFLOPS |
| INT8 (with sparsity) | 1,676 TOPS | Not published |
Performance Analysis
Dense FP16 performance on the RTX 5090 measures 209.5 TFLOPS with no dense FP16 figure published for the RTX A4000. FP16 performance with sparsity reaches 419 TFLOPS on the RTX 5090 against 153.4 TFLOPS with sparsity on the RTX A4000. FP32 performance equals 104.8 TFLOPS on the RTX 5090 compared with 19.2 TFLOPS on the RTX A4000. The fourfold memory bandwidth advantage of 1792 GB/s over 448 GB/s permits larger batch sizes during training and inference steps that depend on data movement rates. These deltas translate into faster iteration cycles for dense and sparse tensor operations on the RTX 5090.
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.
RTX 5090
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| Vast.ai | Alberta, CA | 8 | $0.87 | $6.93 | Deploy |
| RunPod | global | 1 | $1.19 | — | Deploy |
| LeaderGPU | The Netherlands | 1 | $2.29 | — | Deploy |
3 providers in stock, 20 offers (cheapest per provider shown). All RTX 5090 offers, price history and alerts
RTX A4000
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| Hyperstack | NORWAY-1 | 1 | $0.15 | — | Deploy |
| Paperspace | ny2 | 2 | $0.76 | $1.52 | Deploy |
2 providers in stock, 7 offers (cheapest per provider shown). All RTX A4000 offers, price history and alerts
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When to Choose the RTX 5090
The RTX 5090 suits workloads that require the 32 GB VRAM capacity together with 1792 GB/s bandwidth. Training and inference jobs that scale with the 209.5 TFLOPS dense FP16 rating benefit from this configuration over the lower specifications of the RTX A4000.
When to Choose the RTX A4000
The RTX A4000 fits power-constrained environments where the 140 W TDP matters more than peak throughput. Tasks that remain within the 16-20 GB VRAM range and do not require the 104.8 TFLOPS FP32 rating of the RTX 5090 can operate efficiently on this card.
Use Cases
The 32 GB VRAM and 209.5 TFLOPS dense FP16 rating support larger models than the 16-20 GB limit on the RTX A4000.
The 419 TFLOPS FP16 with sparsity and 1792 GB/s bandwidth enable higher throughput than the 153.4 TFLOPS with sparsity on the RTX A4000.
The 104.8 TFLOPS FP32 performance combined with 32 GB memory accommodates fine-tuning runs that exceed the RTX A4000 capacity.
The 32 GB GDDR7 memory and 1792 GB/s bandwidth handle larger batch generation compared with the RTX A4000 specifications.
The RTX A4000 meets needs at 140 W TDP when workloads fit in 16-20 GB while the RTX 5090 accelerates those requiring 104.8 TFLOPS FP32.
Frequently Asked Questions
How does memory bandwidth compare on these GPUs?▾
Memory bandwidth measures 1792 GB/s on the RTX 5090 and 448 GB/s on the RTX A4000. The fourfold increase supports larger batches in data-intensive operations.
Which GPU has higher FP32 performance?▾
The RTX 5090 delivers 104.8 TFLOPS FP32 while the RTX A4000 delivers 19.2 TFLOPS FP32. This gap determines speed in precision-sensitive scientific workloads.
What are the TDP values for each card?▾
The RTX 5090 lists a 575 W TDP and the RTX A4000 lists a 140 W TDP. Power budgets therefore favor the RTX A4000 in constrained deployments.
Can the RTX A4000 run sparse FP16 workloads?▾
The RTX A4000 reaches 153.4 TFLOPS FP16 with sparsity. The RTX 5090 reaches 419 TFLOPS FP16 with sparsity for the same workload type.
Which is cheaper to rent, the RTX 5090 or the RTX A4000?▾
Cloud rental prices for both the RTX 5090 and RTX A4000 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 RTX 5090 have compared to the RTX A4000?▾
The RTX 5090 has 32 GB of GDDR7 memory. The RTX A4000 has 16 to 20 GB of GDDR6 memory.
Can I find RTX 5090 and RTX A4000 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 RTX 5090 and the RTX A4000?▾
The RTX 5090 uses the Blackwell architecture (2025) while the RTX A4000 uses Ampere (2021). The RTX 5090 has 32 GB of GDDR7 at 1,792 GB/s; the RTX A4000 has 16-20 GB of GDDR6 at 448 GB/s, so the RTX 5090 has 4.0x the memory bandwidth of the RTX A4000.
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 RTX 5090 and the RTX A4000. 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 RTX 5090Every current offer by provider, daily price history and a price alert.
- Rent RTX A4000Every 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.