Specifications Compared
| Spec | RTX-3080 | RTX-3090 |
|---|---|---|
| TDP | 320W | 350W |
| VRAM | 10-12 GB | 24 GB |
| CUDA Cores | 8,704 | 10,496 |
| Memory Type | GDDR6X | GDDR6X |
| Architecture | Ampere | Ampere |
| Form Factors | PCIe | PCIe |
| Interconnect | NVLink | |
| Tensor Cores | 272 | 328 |
| FP16 Performance | 29.8 TFLOPS | 35.6 TFLOPS |
| FP32 Performance | 29.8 TFLOPS | 35.6 TFLOPS |
| Memory Bandwidth | 760 GB/s | 936 GB/s |
Performance Analysis
Compute specifications reveal a clear edge for the RTX 3090 Ti: its 35.6 TFLOPS in FP16 and FP32 surpasses the RTX 3080 Ti's 29.8 TFLOPS by approximately 19 percent, accelerating training and inference on deep learning models. This delta proves critical for compute-bound workloads, where the RTX 3090 Ti completes iterations faster, reducing overall training time on large datasets.
Memory differences profoundly impact real-world usage. The RTX 3090 Ti's 24 GB VRAM and 936 GB/s bandwidth support larger batch sizes and complex models that exceed the RTX 3080 Ti's 10 to 12 GB and 760 GB/s limits, minimizing out-of-memory errors during LLM training or high-resolution Stable Diffusion generation. Higher bandwidth on the RTX 3090 Ti sustains data throughput for memory-bound tasks, enabling efficient scaling in multi-GPU setups via NVLink, absent on the RTX 3080 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 104GB 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 3080 Ti
The RTX 3080 Ti suits budget-conscious deployments where workloads fit within 10 to 12 GB VRAM. Its lower TDP of 320W reduces power costs compared to 350W on the RTX 3090 Ti, and cloud pricing from $0.08 per hour (average $0.14 per hour) offers better value than the RTX 3090 Ti's $0.10 to $0.25 per hour range. Ideal for inference on smaller models or fine-tuning compact networks where 29.8 TFLOPS and 760 GB/s bandwidth suffice without excess capacity.
When to Choose the RTX 3090 Ti
Opt for the RTX 3090 Ti when handling memory-heavy tasks demanding 24 GB VRAM, such as training large LLMs or processing high-resolution images. Its superior 936 GB/s bandwidth and 35.6 TFLOPS performance enable larger batches and faster execution versus the RTX 3080 Ti's constraints. NVLink support facilitates multi-GPU scaling, justifying the higher average pricing of $0.25 per hour for professional-scale computing.
Use Cases
The RTX 3090 Ti's 24 GB VRAM accommodates larger models and batches compared to the RTX 3080 Ti's 10 to 12 GB. Its 936 GB/s bandwidth and 35.6 TFLOPS further accelerate training cycles.
Smaller models fit within the RTX 3080 Ti's 10 to 12 GB VRAM at 29.8 TFLOPS, suiting cost-sensitive inference. Larger deployments benefit from the RTX 3090 Ti's 24 GB and higher bandwidth.
Fine-tuning typically requires under 12 GB VRAM, where the RTX 3080 Ti's 760 GB/s bandwidth and lower $0.14 per hour average pricing provide efficiency. The 29.8 TFLOPS matches most needs.
High-resolution generation demands 24 GB VRAM on the RTX 3090 Ti to avoid swapping, with 936 GB/s bandwidth speeding up diffusion steps over the RTX 3080 Ti.
Simulations often scale with 35.6 TFLOPS and NVLink on the RTX 3090 Ti for multi-GPU clusters. The extra 24 GB VRAM handles large datasets better than 10 to 12 GB.
Frequently Asked Questions
Which is faster for AI training: RTX 3080 Ti or RTX 3090 Ti?▾
The RTX 3090 Ti delivers 35.6 TFLOPS in FP16 and FP32, outperforming the RTX 3080 Ti's 29.8 TFLOPS by 19 percent for faster training. Its 24 GB VRAM supports larger models. Bandwidth at 936 GB/s versus 760 GB/s aids batch processing.
RTX 3080 Ti vs RTX 3090 Ti VRAM comparison?▾
RTX 3080 Ti offers 10 to 12 GB GDDR6X, while RTX 3090 Ti provides 24 GB for bigger models. This doubles capacity for tasks like LLM fine-tuning. Memory bandwidth is 760 GB/s on RTX 3080 Ti versus 936 GB/s on RTX 3090 Ti.
What are the cloud rental prices for these GPUs?▾
RTX 3080 Ti rents from $0.08 per hour, averaging $0.14 per hour across 4 offers. RTX 3090 Ti starts at $0.10 per hour, averaging $0.25 per hour over 5 offers. Pricing reflects performance and VRAM differences.
RTX 3080 Ti or 3090 Ti for Stable Diffusion?▾
RTX 3090 Ti excels with 24 GB VRAM and 936 GB/s bandwidth for high-resolution outputs. RTX 3080 Ti's 10 to 12 GB limits complex generations. Both use Ampere architecture from 2020.
Power consumption of RTX 3080 Ti vs RTX 3090 Ti?▾
RTX 3080 Ti has a 320W TDP, lower than the RTX 3090 Ti's 350W. This affects cloud hosting costs. Performance scales with 29.8 TFLOPS on RTX 3080 Ti versus 35.6 TFLOPS on RTX 3090 Ti.
Do these GPUs support multi-GPU setups?▾
RTX 3090 Ti includes NVLink for efficient multi-GPU interconnects. RTX 3080 Ti relies on PCIe alone. This benefits scaled training with 24 GB VRAM per card.
Which is cheaper to rent, the RTX 3080 or the RTX 3090?▾
Cloud rental prices for both the RTX 3080 and RTX 3090 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 3080 have compared to the RTX 3090?▾
The RTX 3080 has 10 to 12 GB of GDDR6X memory. The RTX 3090 has 24 GB of GDDR6X memory.
Can I find RTX 3080 and RTX 3090 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 3080 and the RTX 3090?▾
The RTX 3080 uses the Ampere architecture (2020) while the RTX 3090 uses Ampere (2020). The RTX 3090 delivers 1.2x the FP16 throughput and 1.2x the memory bandwidth of the RTX 3080.