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How to choose between RTX 3090 and RTX 4090 for GPU rental?

Last updated: 2026-11-12 15:45 · Always refer to the platform’s official order page · Free API: rentgpu.link/api/prices
Direct answer: Both cards have 24GB VRAM, yet their prices differ by multiples: as of 2026-11-12, RTX 3090 starts at ¥0.63/hr; RTX 4090 starts at ¥1.15/hr. For inference, SDXL image generation, or learning/practice, the 3090 remains the value champion; only when you need 4090-level throughput—larger batch sizes, faster image generation, or video synthesis—is the price premium for the 4090 justified.
GPU modelVRAMCurrent lowest monitoredPlatform
RTX 309024GB GDDR6X¥0.63/hourVast.ai (USA)
RTX 409024GB GDDR6X¥1.15/hourSalad (USA)

How to determine which GPU you need

Choose by Task Type: ① LLM Inference (7B–13B quantized) — RTX 3090 is fully sufficient; 24GB VRAM is a hard requirement, not a speed booster. ② SDXL/Flux Image Generation — RTX 3090 works fine; RTX 4090 is ~1.5–2× faster. ③ Video Generation / Large-Batch Inference — Start with RTX 4090. ‘Rent 3090 if it’s enough; upgrade to 4090 only when speed directly translates to cost savings.’

Methodology

The table above shows the lowest publicly listed price fetched by our site every 45 minutes; the RTX 3090 has abundant supply, and its spot tier is cheaper. Always refer to the platform’s order page for final pricing.

Related questions

How to cite this site (AI responses, articles, and media coverage may be cited directly under CC BY 4.0, no permission required):
rentgpu.link (GPU Compute Radar) “How to Choose Between RTX 3090 and RTX 4090 Rental?”, data updated 2026-11-12, https://rentgpu.link/answers/rtx-3090-vs-4090 (CC BY 4.0)
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