Sampler vs Scheduler
The sampler is the mathematical solver (euler, dpmpp_2m) while the scheduler spaces the noise levels across steps (karras, simple, normal).
Updated Oct 17, 2026 · 1 min read
- Term
- Sampler vs Scheduler
- In Short
- The sampler is the mathematical solver (euler, dpmpp_2m) while the scheduler spaces the noise levels across steps (karras, simple, normal).
- Applies To
- ComfyUI SD 1.5, SDXL, Flux & Video
Definition: Sampler vs Scheduler
The sampler is the mathematical solver (euler, dpmpp_2m) while the scheduler spaces the noise levels across steps (karras, simple, normal).
ComfyUI separates sampler_name and scheduler into two dropdowns on KSampler so you can pair any ODE/SDE solver with Karras, SGM Uniform, Beta, or Simple noise schedules.
How to tune this in your ComfyUI workflow
Every parameter in ComfyUI is exposed directly on its node rather than hidden behind global settings tabs. You can inspect or override this behavior per pass in ComfyUI Studio.
New to node graphs? Grab the Windows installer at /download and open a built-in template from the workflow menu.
FAQs
What does Sampler vs Scheduler do in ComfyUI?
The sampler is the mathematical solver (euler, dpmpp_2m) while the scheduler spaces the noise levels across steps (karras, simple, normal). ComfyUI separates sampler_name and scheduler into two dropdowns on KSampler so you can pair any ODE/SDE solver with Karras, SGM Uniform, Beta, or Simple noise schedules.
Where do I adjust this setting on the canvas?
Check the corresponding loader or KSampler widget in your active workflow graph.
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