RTX 5070 Ti vs RTX 3090 in ComfyUI: 5070 Ti wins warm batches, 3090 wins cold loads
Numerous_Access_8008 · reddit · 2026-11-13
A Reddit user benchmarked RTX 5070 Ti (16GB) against RTX 3090 (24GB) in ComfyUI with identical settings.
- Krea 2 Turbo images (768×1344, 8 steps, fp8scaled): warm avg 7.7s vs 10.4s — the 5070 Ti is 26% faster thanks to native FP8 tensor cores, but cold loads are 15% slower than the 3090.
- LTX 2.5 i2v (704×1280, 5s, int8): warm avg 45.1s vs 49.4s — 5070 Ti wins by 9%; cold loads again favor the 3090 by 15%.
Takeaway: route warm/batch work to the 5070 Ti and large-VRAM or one-off loads to the 3090, whose 24GB avoids offloading. The author notes it's a single-GPU consumer test, not a controlled lab benchmark.
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