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# SamplerDpmppSde - ComfyUI Built-in Node Documentation

> Complete documentation for the SamplerDpmppSde node in ComfyUI. Learn its inputs, outputs, parameters and usage.

This node is designed to generate a sampler for the DPM++ SDE (Stochastic Differential Equation) model. It adapts to both CPU and GPU execution environments, optimizing the sampler's implementation based on the available hardware.

## Inputs

| Parameter      | Description                                                                                                                | Data Type      |
| -------------- | -------------------------------------------------------------------------------------------------------------------------- | -------------- |
| `eta`          | Specifies the step size for the SDE solver, influencing the granularity of the sampling process.                           | FLOAT          |
| `s_noise`      | Determines the level of noise to be applied during the sampling process, affecting the diversity of the generated samples. | FLOAT          |
| `r`            | Controls the ratio of noise reduction in the sampling process, impacting the clarity and quality of the generated samples. | FLOAT          |
| `noise_device` | Selects the execution environment (CPU or GPU) for the sampler, optimizing performance based on available hardware.        | COMBO\[STRING] |

## Outputs

| Parameter | Description                                                                                           | Data Type |
| --------- | ----------------------------------------------------------------------------------------------------- | --------- |
| `sampler` | The generated sampler configured with the specified parameters, ready for use in sampling operations. | SAMPLER   |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/SamplerDpmppSde/en.md)