RTX 3090 vs RTX 5070 Ti: Specs, VRAM & Price
Short answer: choose the RTX 3090 when 24 GB of VRAM is the gating requirement. Choose the RTX 5070 Ti when 16 GB is enough for the workload and availability points that way.
The RTX 3090 has 24 GB of VRAM; the RTX 5070 Ti has 16 GB.
You can rent both by the hour, no purchase required. RTX 3090 from $0.220/GPU/hr; RTX 5070 Ti from $0.375/GPU/hr. The RTX 3090 is 41% cheaper at the entry rate.
RTX 3090
Good for inference and small-scale training workloads
RTX 5070 Ti
Good for inference and light fine-tuning workloads
Last updated: 2026-11-03 UTCRefreshes every 6 hours
Specs side by side
| Spec | RTX 3090 | RTX 5070 Ti |
|---|---|---|
| VRAM | 24 GB | 16 GB |
| Memory bandwidth | 936 GB/s | 896 GB/s |
| Architecture | Ampere | Blackwell |
| Compute capability | 8.6 | 12.0 |
| Precisions in hardware | FP32, FP16, BF16, INT4 | FP32, FP16, BF16, FP8, INT4 |
| Peak FP16/BF16 tensor TFLOPS | 142 TFLOPS | 175.8 TFLOPS |
| Peak FP8 tensor TFLOPS | – | 351.5 TFLOPS |
| NVLink / multi-GPU interconnect | NVLink, 2-way | – |
| Max board power (TDP) | 350W | 300W |
| Form factor | PCIe 4.0 x16 | – |
| Regions | 2 | 1 |
On-demand price
| Rate | RTX 3090 | RTX 5070 Ti |
|---|---|---|
| Lowest per GPU/hr | $0.220/GPU/hr (cheapest overall) | $0.375/GPU/hr (cheapest overall) |
Which is better for AI: RTX 3090 or RTX 5070 Ti?
Choose the RTX 3090 when 24 GB of VRAM is the gating requirement. Choose the RTX 5070 Ti when 16 GB is enough for the workload and availability points that way.
RTX 3090 vs RTX 5070 Ti: common questions
Is the RTX 3090 or the RTX 5070 Ti better for AI?
Short answer: choose the RTX 3090 when 24 GB of VRAM is the gating requirement. Choose the RTX 5070 Ti when 16 GB is enough for the workload and availability points that way.
Is the RTX 3090 or the RTX 5070 Ti cheaper to rent?
On Aquanode's live marketplace the RTX 3090 starts at $0.220/GPU/hr (median $0.397/GPU/hr) and the RTX 5070 Ti starts at $0.375/GPU/hr (median $0.500/GPU/hr). The RTX 3090 is the cheaper of the two at the entry rate, by 41%.
What is the difference between the RTX 3090 and the RTX 5070 Ti?
The RTX 3090 has 24 GB of VRAM against the RTX 5070 Ti's 16 GB; the RTX 3090 is an Ampere part and the RTX 5070 Ti is Blackwell (compute capability 8.6 vs 12.0); only the RTX 5070 Ti supports FP8 compute. On price, the RTX 3090 lists from $0.220/GPU/hr and the RTX 5070 Ti from $0.375/GPU/hr.
How widely available are the RTX 3090 and the RTX 5070 Ti?
The RTX 3090 is listed in 2 regions and the RTX 5070 Ti in 1 region right now.
How much does 1,000 GPU-hours cost on the RTX 3090 vs the RTX 5070 Ti?
At the lowest rates listed today, 1,000 GPU-hours costs $220 on the RTX 3090 and $375 on the RTX 5070 Ti, a difference of $155 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the RTX 3090 have compared to the RTX 5070 Ti?
The RTX 3090 has 24 GB of VRAM; the RTX 5070 Ti has 16 GB.
Does the RTX 3090 or the RTX 5070 Ti support NVLink?
The RTX 3090 supports NVLink, 2-way; the RTX 5070 Ti has no dedicated GPU-to-GPU interconnect.
How this comparison is calculated
Every price is normalized to a per-GPU hourly rate using the same pipeline as every other pricing surface on Aquanode, and only the cheapest qualifying offer per provider is shown. A dash means that provider does not currently list that GPU.
Architecture, compute capability and supported precisions come from each vendor's published datasheet for that generation, not from the marketplace feed. This page regenerates at most once per hour.
Memory bandwidth, tensor TFLOPS, NVLink/interconnect and max board power are the same verified-from-datasheet figures shown on each model's own RTX 3090 page and RTX 5070 Ti page, which link the primary vendor source for that model. A dash here means Aquanode hasn't verified that figure from a primary source yet, never a guess.
Go further
Check what fits in each card's memory with the RTX 3090 VRAM calculator and the RTX 5070 Ti VRAM calculator, or browse every model by generation in the GPU index.
More RTX 3090 comparisons
More RTX 5070 Ti comparisons
Related reading: RTX 3090 pricing and specs, and RTX 3090 for AI.
