7.4.5.1 - Arnold User Guide
19 February 2026
Arnold 7.4.5.1 is a bug-fix release. For the full list of features, bug fixes, and incompatible changes in Arnold 7.4.5.0, see the Arnold 7.4.5.0 release notes.
Bug Fixes
ARNOLD-17399 - IPR crash after deleting shapes
ARNOLD-17489 - Crash with invalid vdb points grid in point cloud queries
ARNOLD-17494 - Linux crash regression in 7.4.5.0
usd#2557 - Fix regression when a geometry has an instancer without any instances
usd#2547 - Changing material terminal is not updated with Hydra 2
usd#2536 - ArnoldUsd procedural filename is not reported as an asset
System Requirements
- Windows 10 or later, with the Visual Studio 2019 redistributable.
- Linux with at least glibc 2.28. This is equivalent to RHEL/Rocky 8.
- macOS 11 or later.
- x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M-series chips are natively supported.
- GPU rendering and OptiX denoising work on Windows and Linux only, and requires driver versions newer than 582.16/580.126 (Windows/Linux). Older drivers will log an error and abort the render. Note that you can use New Feature Branch drivers.
- On Linux, we recommend 590.48 or higher drivers.
- On Windows, we recommend 591.28 or higher drivers.
- Intel OIDN GPU support is limited to:
- macOS
- Apple native CPUs (M1 and newer)
- Linux
- NVIDIA GPUs using Turing or newer architectures
- Windows
- Intel Xe dedicated and integrated GPUs
- NVIDIA GPUs using Turing or newer architectures
- AMD GPUs with RDNA2 (Navi 21 only) and RDNA3 (Navi 3x) architectures
- macOS