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Samplers and step counts control how SD refines the image from noise — understanding these prevents wasted time and GPU cycles.

Key Samplers

  • DPM++ 2M Karras: Best quality/speed balance — great default
  • Euler a: More creative, more variation between seeds
  • DDIM: Deterministic, good for img2img
  • LCM / Lightning: For fast 4–8 step generation

Steps

  • 20–30 steps: Sweet spot for most use cases
  • Below 15: Noticeable quality loss
  • Above 50: Diminishing returns, wasted compute

CFG Scale

Controls how strongly the image follows your prompt. 7 is the classic default. Lower = more creative, Higher = more literal (and often over-saturated above 12).


YouTube • Top 10
Stable Diffusion University: Samplers and Steps — The Technical Controls
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Stable Diffusion University: Samplers and Steps — The Technical Controls
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Reference:

Samplers comparison guide

image for linkhttps://en.wikipedia.org/wiki/Special:Search?search=Samplers%20and%20Steps

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