# cuDNN 9.x for CUDA 12.x (Windows Driver >= 527.41) — Software interface version compatibility

For cuDNN 9.x for CUDA 12.x (Windows Driver >= 527.41), product is cuDNN; software version is cuDNN 9.x; dependency version is CUDA 12.0-12.9; companion package versions is Windows Driver >= 527.41, recorded from its source on 2026-08-04.

- **Product:** cuDNN
- **Version pairing:** cuDNN 9.x for CUDA 12.x (Windows Driver >= 527.41)
- **Software version:** cuDNN 9.x
- **Dependency version:** CUDA 12.0-12.9 _(unconfirmed — we could not tie this to the quote below)_
- **Companion package versions:** Windows Driver >= 527.41 _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> cuDNN 9.x for CUDA 12.x → Supports CUDA 12.0–12.9 → Windows requires Driver ≥ 527.41

## Source

- https://medium.com/@vici0549/the-definitive-guide-to-pytorch-cuda-and-flash-attention-compatibility-ebec1161ec10

Last verified: 2026-08-04. Review by: 2026-10-03.
Part of [Software interface version compatibility](https://referencesource.org/software-interface-version-compatibility/).