Specifications Compared
| Spec | RTX 3090 Ti | RTX 4080 SUPER |
|---|---|---|
| TDP | 350W | 320W |
| VRAM | 24 GB | 16 GB |
| CUDA Cores | 10,496 | 9,728 |
| Memory Type | GDDR6X | GDDR6X |
| Architecture | Ampere | Ada Lovelace |
| Form Factors | PCIe | PCIe |
| Interconnect | NVLink | Not published |
| Tensor Cores | 328 | 304 |
| FP32 Performance | 35.6 TFLOPS | 48.7 TFLOPS |
| Memory Bandwidth | 936 GB/s | 717 GB/s |
| FP16 (vendor figure, sparsity not specified) | 35.6 TFLOPS | 48.7 TFLOPS |
| INT8 (vendor figure, sparsity not specified) | Not published | 780 TOPS |
Performance Analysis
The RTX 4080 SUPER variant achieves 48.7 TFLOPS dense FP16 and 48.7 TFLOPS dense FP32 while the RTX 3090 Ti variant reaches 35.6 TFLOPS dense FP16 and 35.6 TFLOPS dense FP32. This dense FP16 advantage of 13.1 TFLOPS on the RTX 4080 SUPER supports faster training iterations and higher inference throughput on models that stay within 16 GB. Memory bandwidth stands at 936 GB/s for the RTX 3090 Ti family and 717 GB/s for the RTX 4080 SUPER family so the higher bandwidth on the RTX 3090 Ti allows larger batch sizes in memory intensive operations despite lower tensor throughput. TDP figures of 350 W for the RTX 3090 Ti family and 320 W for the RTX 4080 SUPER family indicate the RTX 4080 SUPER consumes less power while delivering the higher dense FP16 rate.
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 3090 Ti
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| LeaderGPU | The Netherlands | 8 | $0.29 | $2.29 | Deploy |
| Vast.ai | Czechia, CZ | 2 | $0.32 | $0.65 | Deploy |
2 providers in stock, 9 offers (cheapest per provider shown). All RTX 3090 Ti offers, price history and alerts
RTX 4080 SUPER
RTX 4080 SUPER is not offered on-demand by any provider we track right now. See the RTX 4080 SUPER rental page for last-seen listed prices and a price alert.
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When to Choose the RTX 3090 Ti
The RTX 3090 Ti variant suits workloads that require the full 24 GB GDDR6X capacity or NVLink interconnect for multi GPU scaling. Scientific computing tasks that exceed 16 GB per GPU benefit from the additional memory on this specific model.
When to Choose the RTX 4080 SUPER
The RTX 4080 SUPER variant fits inference and training jobs that operate efficiently within 16 GB GDDR6X while needing the 48.7 TFLOPS dense FP16 rate and 320 W TDP. Fine tuning sessions gain from the higher dense tensor throughput at reduced power draw on this model.
Use Cases
The RTX 4080 SUPER variant supplies 48.7 TFLOPS dense FP16 which exceeds the 35.6 TFLOPS dense FP16 on the RTX 3090 Ti variant for models that fit in 16 GB.
Higher dense FP16 throughput at 48.7 TFLOPS combined with 320 W TDP favors the RTX 4080 SUPER variant over the 350 W TDP of the RTX 3090 Ti variant.
The RTX 4080 SUPER variant delivers 48.7 TFLOPS dense FP16 and lower TDP allowing efficient fine tuning within the 16 GB memory limit.
The RTX 3090 Ti variant provides 24 GB GDDR6X which accommodates larger diffusion models that exceed the 16 GB capacity of the RTX 4080 SUPER variant.
NVLink interconnect and 24 GB memory on the RTX 3090 Ti variant support multi GPU scientific workloads that need the additional capacity.
Frequently Asked Questions
Which variant offers higher dense FP16 performance?▾
The RTX 4080 SUPER variant reaches 48.7 TFLOPS dense FP16 compared with 35.6 TFLOPS dense FP16 on the RTX 3090 Ti variant.
How do the TDP values compare between these models?▾
The RTX 3090 Ti family lists 350 W TDP while the RTX 4080 SUPER family lists 320 W TDP.
Does the RTX 3090 Ti variant include NVLink?▾
Yes the RTX 3090 Ti variant includes NVLink interconnect whereas the RTX 4080 SUPER variant does not list an interconnect.
Which architecture does each GPU use?▾
The RTX 3090 Ti variant uses Ampere architecture and the RTX 4080 SUPER variant uses Ada Lovelace architecture.
Which is cheaper to rent, the RTX 3090 Ti or the RTX 4080 SUPER?▾
Cloud rental prices for both the RTX 3090 Ti and RTX 4080 SUPER 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 Ti have compared to the RTX 4080 SUPER?▾
The RTX 3090 Ti has 24 GB of GDDR6X memory. The RTX 4080 SUPER has 16 GB of GDDR6X memory.
Can I find RTX 3090 Ti and RTX 4080 SUPER 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 Ti and the RTX 4080 SUPER?▾
The RTX 3090 Ti uses the Ampere architecture (2020) while the RTX 4080 SUPER uses Ada Lovelace (2022). The RTX 4080 SUPER delivers 1.4x the dense FP16 throughput (97.5 vs 71 TFLOPS, both without sparsity) while the RTX 3090 Ti has 1.3x the memory bandwidth of the RTX 4080 SUPER.
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 3090 Ti and the RTX 4080 SUPER. 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 3090Every current offer by provider, daily price history and a price alert.
- Rent RTX 4080Every 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.