Specifications Compared
| Spec | RTX 5090 | RTX A4500 |
|---|---|---|
| TDP | 575W | 140W |
| VRAM | 32 GB | 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 | Not published |
| 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 | Not published |
| INT8 (with sparsity) | 1,676 TOPS | Not published |
| FP16 (vendor figure, sparsity not specified) | Not published | 19.2 TFLOPS |
Performance Analysis
The RTX 5090 variant delivers dense FP16 performance of 209.5 TFLOPS compared to the 19.2 TFLOPS figure reported for the RTX A4500 variant. This gap means the RTX 5090 variant completes matrix operations in training and inference at more than ten times the rate of the RTX A4500 variant when both operate in dense mode. Memory bandwidth shared across the RTX 5090 family reaches 1792 GB/s while the RTX A4500 family shares 448 GB/s so the RTX 5090 variant sustains larger batch sizes during model execution without memory stalls. The RTX 5090 variant also reports dense FP32 performance of 104.8 TFLOPS against 19.2 TFLOPS for the RTX A4500 variant further widening the advantage in precision sensitive tasks.
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, 8 offers (cheapest per provider shown). All RTX 5090 offers, price history and alerts
RTX A4500
| 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 A4500 offers, price history and alerts
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When to Choose the RTX 5090
The RTX 5090 variant suits large scale model training and inference where 32 GB of memory and 1792 GB/s bandwidth accommodate bigger batches and longer sequences. Its 575 W TDP and dense FP16 rating of 209.5 TFLOPS support sustained throughput in professional environments that require Blackwell architecture features.
When to Choose the RTX A4500
The RTX A4500 variant fits power constrained workstations that operate within a 140 W TDP envelope and require 20 GB of GDDR6 memory for moderate workloads. Its Ampere architecture and 19.2 TFLOPS dense FP16 rating deliver adequate performance for smaller models without exceeding thermal or power limits of compact systems.
Use Cases
The RTX 5090 variant supplies 32 GB memory and dense FP16 throughput of 209.5 TFLOPS that accommodate larger models than the 20 GB and 19.2 TFLOPS of the RTX A4500 variant.
Memory bandwidth of 1792 GB/s on the RTX 5090 variant sustains higher token rates than the 448 GB/s shared by the RTX A4500 family during continuous generation.
The 32 GB capacity and 104.8 TFLOPS dense FP32 rating of the RTX 5090 variant support gradient computations for fine tuning runs that exceed the limits of the RTX A4500 variant.
Dense FP8 performance of 419 TFLOPS on the RTX 5090 variant accelerates image generation steps beyond the 19.2 TFLOPS FP16 rating of the RTX A4500 variant.
Both variants provide PCIe interfaces yet the RTX 5090 variant offers higher FP32 throughput of 104.8 TFLOPS while the RTX A4500 variant operates at lower 140 W TDP for energy sensitive simulations.
Frequently Asked Questions
What memory configurations distinguish the RTX 5090 variant from the RTX A4500 variant?▾
The RTX 5090 variant contains 32 GB of GDDR7 memory while the RTX A4500 variant contains 20 GB of GDDR6 memory. These capacities represent the primary storage difference between the two specific models.
How do the memory bandwidth figures compare between the two GPU families?▾
The RTX 5090 family shares a memory bandwidth of 1792 GB/s whereas the RTX A4500 family shares 448 GB/s. The higher figure on the RTX 5090 side supports larger data movement during tensor operations.
What TDP values apply to the RTX 5090 variant and the RTX A4500 variant?▾
The RTX 5090 family operates at a TDP of 575 W while the RTX A4500 family operates at 140 W. These power figures remain consistent across variants within each family.
Which architecture does each GPU follow?▾
The RTX 5090 variant follows the Blackwell architecture released in 2025 and the RTX A4500 variant follows the Ampere architecture released in 2021. The generational gap accounts for the listed differences in tensor throughput.
How does dense FP16 performance differ between the models?▾
The RTX 5090 variant provides dense FP16 performance of 209.5 TFLOPS while the RTX A4500 variant provides 19.2 TFLOPS. Direct comparison of these dense figures shows the performance separation without invoking sparsity modes.
Do both variants share the same form factor?▾
Both the RTX 5090 variant and the RTX A4500 variant use PCIe form factors. The RTX 5090 variant additionally specifies PCIe 5.0 interconnect support.
Which is cheaper to rent, the RTX 5090 or the RTX A4500?▾
Cloud rental prices for both the RTX 5090 and RTX A4500 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 A4500?▾
The RTX 5090 has 32 GB of GDDR7 memory. The RTX A4500 has 20 GB of GDDR6 memory.
Can I find RTX 5090 and RTX A4500 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 A4500?▾
The RTX 5090 uses the Blackwell architecture (2025) while the RTX A4500 uses Ampere (2021). The RTX 5090 has 32 GB of GDDR7 at 1,792 GB/s; the RTX A4500 has 20 GB of GDDR6 at 448 GB/s, so the RTX 5090 has 4.0x the memory bandwidth of the RTX A4500.
Rent these GPUs
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Related comparisons
How this page is made
- Specifications come from the NVIDIA, AMD and Intel datasheets for the RTX 5090 and the RTX A4500. 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.