Specifications Compared
| Spec | RTX 3080 | RTX 5080 |
|---|---|---|
| TDP | 320W | 360W |
| VRAM | 10-12 GB | 16 GB |
| CUDA Cores | 8,704 | 10,752 |
| FP4 (dense) | Not published | 900.4 TFLOPS |
| FP8 (dense) | Not published | 225.1 TFLOPS |
| Memory Type | GDDR6X | GDDR7 |
| Architecture | Ampere | Blackwell |
| FP16 (dense) | 59.5 TFLOPS | 112.6 TFLOPS |
| Form Factors | PCIe | PCIe |
| INT8 (dense) | 238 TOPS | 450.2 TOPS |
| Interconnect | PCIe 4.0 | PCIe 5.0 |
| Tensor Cores | 272 | 336 |
| FP32 Performance | 29.8 TFLOPS | 56.3 TFLOPS |
| Memory Bandwidth | 760 GB/s | 960 GB/s |
| FP4 (with sparsity) | Not published | 1,801 TFLOPS |
| FP8 (with sparsity) | Not published | 450.2 TFLOPS |
| FP16 (with sparsity) | 119 TFLOPS | 225.1 TFLOPS |
| INT8 (with sparsity) | 476 TOPS | 900.4 TOPS |
Performance Analysis
The RTX 3080 INT8 dense rating of 238 TOPS contrasts with the RTX 5080 INT8 dense rating of 450.2 TOPS so quantized inference also favors the Blackwell part when sparsity is not applied.
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 3080
RTX 3080 is not offered on-demand by any provider we track right now. See the RTX 3080 rental page for last-seen listed prices and a price alert.
RTX 5080
RTX 5080 is not offered on-demand by any provider we track right now. See the RTX 5080 rental page for last-seen listed prices and a price alert.
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When to Choose the RTX 3080
The RTX 3080 fits power limited deployments because its TDP measures 320 W against 360 W on the RTX 5080. Applications that run on PCIe 4.0 links and require no more than 10 to 12 GB of memory experience no functional gap relative to the newer card.
When to Choose the RTX 5080
The RTX 5080 suits memory intensive inference because its 16 GB GDDR7 capacity exceeds the 10 to 12 GB limit of the RTX 3080. Workloads that scale with 112.6 TFLOPS dense FP16 or 450.2 TOPS dense INT8 finish faster on the Blackwell GPU.
Use Cases
The RTX 5080 supplies 112.6 TFLOPS dense FP16 against 59.5 TFLOPS on the RTX 3080 so epoch times decrease.
The RTX 5080 provides 112.6 TFLOPS dense FP16 and 16 GB memory which together exceed the 59.5 TFLOPS and 10 to 12 GB limits of the RTX 3080.
The RTX 5080 delivers 112.6 TFLOPS dense FP16 and 960 GB per second bandwidth for larger adapter batches than the RTX 3080 can sustain.
Both cards handle image generation yet the RTX 5080 finishes steps faster with its 112.6 TFLOPS dense FP16 rating.
The RTX 5080 supplies 56.3 TFLOPS FP32 compared with 29.8 TFLOPS on the RTX 3080 for double precision workloads.
Frequently Asked Questions
What is the FP32 rating difference?▾
The RTX 3080 reaches 29.8 TFLOPS FP32 and the RTX 5080 reaches 56.3 TFLOPS FP32.
Which GPU has higher memory bandwidth?▾
The RTX 5080 reaches 960 GB per second while the RTX 3080 reaches 760 GB per second.
How do the dense FP16 figures compare?▾
The RTX 3080 lists 59.5 TFLOPS dense FP16 and the RTX 5080 lists 112.6 TFLOPS dense FP16.
What TDP values are listed?▾
The RTX 3080 TDP is 320 W and the RTX 5080 TDP is 360 W.
Which interconnect does each card use?▾
The RTX 3080 uses PCIe 4.0 and the RTX 5080 uses PCIe 5.0.
Which is cheaper to rent, the RTX 3080 or the RTX 5080?▾
Cloud rental prices for both the RTX 3080 and RTX 5080 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 5080?▾
The RTX 3080 has 10 to 12 GB of GDDR6X memory. The RTX 5080 has 16 GB of GDDR7 memory.
Can I find RTX 3080 and RTX 5080 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 5080?▾
The RTX 3080 uses the Ampere architecture (2020) while the RTX 5080 uses Blackwell (2025). The RTX 5080 delivers 1.9x the dense FP16 throughput (112.6 vs 59.5 TFLOPS, both without sparsity) and 1.3x the memory bandwidth of the RTX 3080.
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 3080 and the RTX 5080. 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 3080Every current offer by provider, daily price history and a price alert.
- Rent RTX 5080Every 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.