Specifications Compared
| Spec | RTX-3080 | RTX-5070 |
|---|---|---|
| TDP | 320W | 250W |
| VRAM | 10-12 GB | 12 GB |
| CUDA Cores | 8,704 | 6,144 |
| Memory Type | GDDR6X | GDDR7 |
| Architecture | Ampere | Blackwell |
| Form Factors | PCIe | PCIe |
| Interconnect | ||
| Tensor Cores | 272 | 192 |
| FP16 Performance | 29.8 TFLOPS | 40.6 TFLOPS |
| FP32 Performance | 29.8 TFLOPS | 40.6 TFLOPS |
| Memory Bandwidth | 760 GB/s | 448 GB/s |
Performance Analysis
The RTX 5070 surpasses the RTX 3080 in raw compute with 40.6 TFLOPS FP16 and FP32 versus 29.8 TFLOPS. This delta translates to faster model training and inference: training epochs complete quicker on the RTX 5070 by approximately 36 percent based on TFLOPS ratio. Inference latency reduces similarly for compute-bound operations.
Memory bandwidth reveals a tradeoff: 760 GB/s on the RTX 3080 exceeds 448 GB/s on the RTX 5070. Higher bandwidth supports larger batch sizes in memory-intensive tasks, enabling the RTX 3080 to process bigger datasets without swapping. The RTX 5070 compensates with GDDR7 and 12 GB VRAM, matching the RTX 3080's 10 to 12 GB capacity but suiting smaller batches better.
Efficiency edges to the RTX 5070 at 250W TDP versus 320W. This lowers operational costs in prolonged cloud sessions, especially where compute dominates over data movement.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
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When to Choose the RTX 3080
The RTX 3080 excels in bandwidth-heavy scenarios. Its 760 GB/s memory bandwidth outperforms the RTX 5070's 448 GB/s, ideal for large batch inference or simulations requiring rapid data access. Pricing at $0.06 per hour starting and $0.15 average across 10 offers provides better value than the RTX 5070's $0.08 and $0.21 across 6 offers.
Legacy compatibility favors the RTX 3080 for Ampere-optimized software from 2020 deployments.
When to Choose the RTX 5070
The RTX 5070 suits compute-intensive workloads. Its 40.6 TFLOPS FP16 and FP32 exceed the RTX 3080's 29.8 TFLOPS, accelerating training and fine-tuning. Lower 250W TDP versus 320W enhances efficiency in dense cloud instances.
Blackwell architecture from 2025 ensures future-proofing for emerging frameworks exploiting GDDR7 and newer tensor cores.
Use Cases
The RTX 5070's 40.6 TFLOPS FP16 exceeds the RTX 3080's 29.8 TFLOPS, speeding up large model training epochs. Lower 250W TDP supports sustained high-utilization runs.
RTX 3080's 760 GB/s bandwidth handles larger batches better than 448 GB/s on RTX 5070. Cheaper $0.15 average hourly rate fits high-volume inference.
Higher 40.6 TFLOPS on RTX 5070 accelerates parameter updates over RTX 3080's 29.8 TFLOPS. 12 GB VRAM suffices for most fine-tuning datasets.
Both offer similar 10-12 GB VRAM for image generation. RTX 5070 provides faster 40.6 TFLOPS renders, while RTX 3080's bandwidth aids high-resolution batches.
RTX 5070's Blackwell architecture and 40.6 TFLOPS optimize FP32 simulations better than Ampere's 29.8 TFLOPS. Efficiency at 250W reduces long-run costs.
Frequently Asked Questions
Which GPU has higher compute performance?▾
The RTX 5070 delivers 40.6 TFLOPS in FP16 and FP32, surpassing the RTX 3080's 29.8 TFLOPS. This advantage accelerates training and inference tasks. Bandwidth remains higher at 760 GB/s on the RTX 3080.
What are the cloud pricing differences?▾
RTX 3080 starts at $0.06 per hour with $0.15 average across 10 offers. RTX 5070 begins at $0.08 per hour averaging $0.21 across 6 offers. More availability favors RTX 3080 for budget runs.
How does VRAM compare?▾
RTX 3080 provides 10 to 12 GB GDDR6X. RTX 5070 offers 12 GB GDDR7. Both handle mid-sized models, but GDDR7 improves latency on RTX 5070.
Which is more power efficient?▾
RTX 5070 consumes 250W TDP versus 320W on RTX 3080. This yields lower energy costs in cloud environments. Compute gains amplify efficiency.
Is RTX 5070 worth the extra cost?▾
RTX 5070's 40.6 TFLOPS justifies $0.06 higher starting price for compute-heavy work. RTX 3080 suits bandwidth-focused tasks at $0.15 average. Choose based on workload balance.
What architectures do they use?▾
RTX 3080 uses Ampere from 2020. RTX 5070 employs Blackwell from 2025. Newer design brings tensor core improvements despite bandwidth drop to 448 GB/s.
Which is cheaper to rent, the RTX 3080 or the RTX 5070?▾
Cloud rental prices for both the RTX 3080 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 3080 have compared to the RTX 5070?▾
The RTX 3080 has 10 to 12 GB of GDDR6X memory. The RTX 5070 has 12 GB of GDDR7 memory.
Can I find RTX 3080 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 3080 and the RTX 5070?▾
The RTX 3080 uses the Ampere architecture (2020) while the RTX 5070 uses Blackwell (2025). The RTX 5070 delivers 1.4x the FP16 throughput and 1.7x the memory bandwidth of the RTX 3080.