RTX 5070 Ti Benchmarks: Tuned ComfyUI Flags Cut H3 Video Time by Over Half
AnalElder · reddit · 2026-11-13
作者在 RTX 5070 Ti 16GB 上实测超频与 ComfyUI 启动参数对生成速度的影响:
- 超频(+350 MHz 核心/+2500 MHz 显存/350W)稳定提速约 9–12%,功耗约升 50W,最高 73°C
- 启动参数 --use-ck-attention --disable-xformers --fast fp16accumulation fp8matrixmult --enable-triton-backend 效果强依赖模型:H3 视频 591→286s(-52%),H3+turbo LoRA 250→127s,Qwen Image 2.1 base 提速 27%,Krea 2 Turbo 提速 21%,但对 Flux/Qwen Turbo/MOSS 几乎无效
- flag+超频叠加后 H3 视频从 591s 降到 256s,约 2.3 倍;采样从 28.48 降至 11.72 s/step
- 显示器接 iGPU 几乎不影响速度
结论:超频普适,flag 要按模型试;作者写了随 ComfyUI 启停自动切换超频的脚本。
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