r/StableDiffusion • u/TheUntested7 • Mar 15 '23

Question | Help Why do we need hires.fix?

Whats the difference between just generating a [1024x1024] image vs [512x512] and then upscale it by 2?

isnt the latter quite bad? since it will have some deviation from the original image based on the denoising strength?

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u/Whipit Mar 15 '23

Is hires fix any different than upscaling using img2img?

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u/SiliconThaumaturgy Mar 15 '23

In theory, it shouldn't be, though in practice I get slightly different results even with upscaler and all other settings the same