Specifications Compared
| Spec | RTX 5090 | RTX 4090 |
|---|---|---|
| TDP | 575W | 450W |
| VRAM | 32 GB | 24 GB |
| CUDA Cores | 21,760 | 16,384 |
| FP4 (dense) | 1,676 TFLOPS | Not published |
| FP8 (dense) | 419 TFLOPS | 330.3 TFLOPS |
| Memory Type | GDDR7 | GDDR6X |
| Architecture | Blackwell | Ada Lovelace |
| FP16 (dense) | 209.5 TFLOPS | 165.2 TFLOPS |
| Form Factors | PCIe | PCIe |
| INT8 (dense) | 838 TOPS | 660.6 TOPS |
| Interconnect | PCIe 5.0 | PCIe 4.0 |
| Tensor Cores | 680 | 512 |
| FP32 Performance | 104.8 TFLOPS | 82.6 TFLOPS |
| FP64 Performance | 1.6 TFLOPS | 1.3 TFLOPS |
| Memory Bandwidth | 1,792 GB/s | 1,008 GB/s |
| FP4 (with sparsity) | 3,352 TFLOPS | Not published |
| FP8 (with sparsity) | 838 TFLOPS | 660.6 TFLOPS |
| FP16 (with sparsity) | 419 TFLOPS | 330.4 TFLOPS |
| INT8 (with sparsity) | 1,676 TOPS | 1,321.2 TOPS |
Performance Analysis
The FP16 dense rating of 209.5 TFLOPS on the RTX 5090 surpasses the FP16 dense rating of 165.2 TFLOPS on the RTX 4090. The FP16 with sparsity rating of 419 TFLOPS on the RTX 5090 surpasses the FP16 with sparsity rating of 330.4 TFLOPS on the RTX 4090. Higher memory bandwidth of 1792 GB/s on the RTX 5090 permits larger batch sizes than the 1008 GB/s bandwidth on the RTX 4090 during both training and inference. The FP32 rating of 104.8 TFLOPS on the RTX 5090 exceeds the 82.6 TFLOPS rating on the RTX 4090 and supports faster computation in precision sensitive workloads.
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 |
| LeaderGPU | The Netherlands | 1 | $2.29 | — | Deploy |
2 providers in stock, 6 offers (cheapest per provider shown). All RTX 5090 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 and the 1792 GB/s memory bandwidth. Its FP16 dense performance of 209.5 TFLOPS enables larger models than the RTX 4090 in training and inference scenarios.
When to Choose the RTX 4090
The RTX 4090 suits workloads constrained by the 450W TDP limit rather than the 575W TDP of the RTX 5090. Its FP16 dense performance of 165.2 TFLOPS remains adequate for moderate scale inference tasks.
Use Cases
The 32 GB VRAM and 209.5 TFLOPS FP16 dense rating support larger models than the 24 GB VRAM and 165.2 TFLOPS FP16 dense rating.
The 1792 GB/s memory bandwidth and 419 TFLOPS FP16 with sparsity rating allow higher throughput than the 1008 GB/s bandwidth and 330.4 TFLOPS FP16 with sparsity rating.
The 32 GB VRAM capacity accommodates larger batch sizes than the 24 GB VRAM capacity during fine tuning runs.
Both GPUs deliver sufficient FP16 dense performance above 165 TFLOPS for image generation workloads.
The 104.8 TFLOPS FP32 rating exceeds the 82.6 TFLOPS FP32 rating for precision heavy simulations.
Frequently Asked Questions
What is the memory bandwidth difference between these GPUs?▾
The RTX 5090 reaches 1792 GB/s while the RTX 4090 reaches 1008 GB/s.
Which GPU has higher FP16 dense performance?▾
The RTX 5090 achieves 209.5 TFLOPS FP16 dense compared with 165.2 TFLOPS FP16 dense on the RTX 4090.
How do the TDP ratings compare?▾
The RTX 5090 lists a 575W TDP while the RTX 4090 lists a 450W TDP.
What FP32 performance do the GPUs provide?▾
The RTX 5090 provides 104.8 TFLOPS FP32 while the RTX 4090 provides 82.6 TFLOPS FP32.
Which architecture does each GPU use?▾
The RTX 5090 uses Blackwell architecture while the RTX 4090 uses Ada Lovelace architecture.
Which is cheaper to rent, the RTX 5090 or the RTX 4090?▾
Cloud rental prices for both the RTX 5090 and RTX 4090 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 4090?▾
The RTX 5090 has 32 GB of GDDR7 memory. The RTX 4090 has 24 GB of GDDR6X memory.
Can I find RTX 5090 and RTX 4090 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 4090?▾
The RTX 5090 uses the Blackwell architecture (2025) while the RTX 4090 uses Ada Lovelace (2022). The RTX 5090 delivers 1.3x the dense FP16 throughput (209.5 vs 165.2 TFLOPS, both without sparsity) and 1.8x the memory bandwidth of the RTX 4090.
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 4090. 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 4090Every 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.