Specifications Compared
| Spec | RTX-3090 | RTX-5070 |
|---|---|---|
| TDP | 350W | 250W |
| VRAM | 24 GB | 12 GB |
| CUDA Cores | 10,496 | 6,144 |
| Memory Type | GDDR6X | GDDR7 |
| Architecture | Ampere | Blackwell |
| Form Factors | PCIe | PCIe |
| Interconnect | NVLink | |
| Tensor Cores | 328 | 192 |
| FP16 Performance | 35.6 TFLOPS | 40.6 TFLOPS |
| FP32 Performance | 35.6 TFLOPS | 40.6 TFLOPS |
| Memory Bandwidth | 936 GB/s | 448 GB/s |
Performance Analysis
Higher FP16 and FP32 performance of 40.6 TFLOPS on the RTX 5070 provides a 14 percent advantage over the RTX 3090 Ti's 35.6 TFLOPS, enabling faster training epochs and inference queries in deep learning pipelines. This compute edge benefits half-precision workloads common in LLM fine-tuning and inference, reducing overall job times. The RTX 3090 Ti's 24 GB VRAM capacity supports loading larger models without swapping, ideal for training massive LLMs that exceed 12 GB thresholds. Memory bandwidth disparity is stark: 936 GB/s on the RTX 3090 Ti versus 448 GB/s on the RTX 5070, allowing the former to handle bigger batch sizes in memory-bound scenarios like Stable Diffusion generation, minimizing stalls from data transfers. Lower 250W TDP on the RTX 5070 enhances density in cloud instances, potentially lowering cooling costs compared to the 350W RTX 3090 Ti.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
RTX 3090 Ti
| Provider | GPU Model | VRAM | Host Specs | Region | Price | Status | Action | |
|---|---|---|---|---|---|---|---|---|
 TensorDock | NVIDIA GeForce RTX 3090 24GB VRAM | 24GB | 0 vCPU 0GB RAM | Wilmington, Delaware | $0.20/GPU/hr | Available | ||
TensorDock | NVIDIA GeForce RTX 3090 24GB VRAM | 24GB | 0 vCPU 0GB RAM | Dallas, Texas | $0.21/GPU/hr | Available | ||
 Vast.ai | 4×NVIDIA GeForce RTX 3090 24GB VRAM | 24GB | 32 vCPU 403GB RAM 153GB Storage | Iceland | $0.25/GPU/hr $1.01/hr total (4×) | Available | ||
Vast.ai | 4×NVIDIA GeForce RTX 3090 24GB VRAM | 24GB | 32 vCPU 252GB RAM 1440GB Storage | Finland | $0.27/GPU/hr $1.07/hr total (4×) | Available | ||
 LeaderGPU | 8×NVIDIA GeForce RTX 3090 24GB VRAM | 24GB | 64 vCPU 384GB RAM 2000GB Storage | Netherlands | $0.29/GPU/hr $2.29/hr total (8×) | Available |
When to Choose the RTX 3090 Ti
The RTX 3090 Ti excels in scenarios demanding high VRAM, such as training LLMs with models over 12 GB or scientific computing with large datasets. Its 24 GB GDDR6X and 936 GB/s bandwidth enable substantial batch sizes, and NVLink interconnect facilitates multi-GPU scaling for distributed training. At $0.10/hr starting price across 5 offers, it provides value for memory-intensive workloads where the RTX 5070's 12 GB limits viability.
When to Choose the RTX 5070
Opt for the RTX 5070 in efficiency-driven tasks like LLM inference or fine-tuning smaller models, where 40.6 TFLOPS outperforms the RTX 3090 Ti's 35.6 TFLOPS at lower 250W TDP. Its Blackwell architecture delivers modern optimizations, and cloud pricing from $0.08/hr averaging $0.16/hr across 2 offers yields superior performance per dollar. GDDR7 memory suffices for most real-time applications without the overhead of higher power draw.
Use Cases
RTX 3090 Ti's 24 GB VRAM handles large models exceeding 12 GB, unlike the RTX 5070. Higher 936 GB/s bandwidth supports bigger batches during training.
RTX 5070's 40.6 TFLOPS provides 14 percent faster inference than 35.6 TFLOPS on RTX 3090 Ti. 12 GB VRAM suffices for most deployed models at lower $0.16/hr average cost.
RTX 3090 Ti suits models over 12 GB with 24 GB VRAM; RTX 5070 fits smaller ones with 40.6 TFLOPS efficiency. Choice depends on model size and budget.
RTX 3090 Ti's 936 GB/s bandwidth and 24 GB VRAM enable larger image batches without bottlenecks. NVLink aids multi-GPU generation workflows.
24 GB VRAM on RTX 3090 Ti accommodates extensive datasets in simulations. 936 GB/s bandwidth accelerates data-heavy computations.
Frequently Asked Questions
Which GPU has more VRAM?▾
The RTX 3090 Ti has 24 GB GDDR6X VRAM, double the RTX 5070's 12 GB GDDR7. This makes the RTX 3090 Ti better for large models. The RTX 5070 suffices for standard workloads.
What are the TFLOPS ratings?▾
RTX 5070 achieves 40.6 TFLOPS in FP16 and FP32, surpassing RTX 3090 Ti's 35.6 TFLOPS by 14 percent. Higher TFLOPS on RTX 5070 speeds training and inference. Both maintain equal FP16 to FP32 ratios.
Which has higher memory bandwidth?▾
RTX 3090 Ti delivers 936 GB/s, more than double the RTX 5070's 448 GB/s. Superior bandwidth on RTX 3090 Ti supports larger batch sizes. RTX 5070's GDDR7 still offers efficiency gains.
What are the power requirements?▾
RTX 3090 Ti requires 350W TDP, higher than RTX 5070's 250W. Lower TDP on RTX 5070 reduces cloud instance power costs. Both use PCIe form factors.
How do cloud prices compare?▾
RTX 5070 starts at $0.08/hr averaging $0.16/hr across 2 offers, cheaper than RTX 3090 Ti's $0.10/hr average $0.25/hr across 5 offers. RTX 5070 provides better value for performance. Prices fluctuate by provider.
Which architecture is newer?▾
RTX 5070 uses Blackwell from 2025, newer than RTX 3090 Ti's Ampere from 2020. Blackwell brings optimizations for AI workloads. RTX 3090 Ti retains NVLink for multi-GPU.
Which is cheaper to rent, the RTX 3090 or the RTX 5070?▾
Cloud rental prices for both the RTX 3090 and RTX 5070 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 3090 have compared to the RTX 5070?▾
The RTX 3090 has 24 GB of GDDR6X memory. The RTX 5070 has 12 GB of GDDR7 memory.
Can I find RTX 3090 and RTX 5070 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 3090 and the RTX 5070?▾
The RTX 3090 uses the Ampere architecture (2020) while the RTX 5070 uses Blackwell (2025). The RTX 5070 delivers 1.1x the FP16 throughput and 2.1x the memory bandwidth of the RTX 3090.