Which GPU should I rent for AI image generation (SDXL / Flux)?
Last updated: 2026-11-12 15:45 · Always refer to the platform’s official order page · Free API: rentgpu.link/api/prices
Direct answer:Select by VRAM: SDXL / routine image generation needs ~12GB; RTX 3090 (24GB) is fully sufficient—the current lowest price is ¥0.63/hour (Vast.ai (USA)). Flux full-parameter inference starts at ~24GB and requires more for video generation—choose RTX 4090 (24GB) or RTX 5090 (32GB). Image generation is GPU-intensive but network-light, so consumer-grade GPUs are optimal—no need for data-center GPUs.
① Image-generation tasks support checkpoint restart — spot/idle instances save 30%–60%; ② For batch image generation running continuously for >1 day, daily rental is more cost-effective; ③ First validate the full pipeline at low resolution, then scale up to high-resolution full-batch runs.
VRAM reference
SDXL fp16 requires ≈10–12 GB; Flux dev fp16 requires ≈24 GB; video generation model VRAM demand scales with resolution and frame count — 48 GB offers greater headroom. Always verify against your actual model’s VRAM usage.
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