Why Doesn't the Viewport Optix Denoiser Doesn't Work in 2.9? I have the latest version of 2.9, a gtx 1060, and 16gb of ram. When I go into &quot;denoising&quot; and check &quot;viewport&quot; with &quot;fastest (optix)&quot; selected it'll take around 7 minutes to load the render kernels. Once it's done the viewport render freezes and gives me this error message that says.
OPTIX_ERROR_CUDA_ERROR in optixDenoiserComputeMemoryResources(denoiser, rect_size.x, rect_size.y, &amp;sizes)(device_optix.cpp850)

I have no idea what it means and I'm mainly posting this just to see if anyone else have this problem, I don't really expect a fix for it. I've reinstalled blender, factory reset it, and updated my gpu driver to no success. Thanks for taking time to read.
With the latest (as of this writing)  alpha release of 2.9 you can indeed use optix and take advantage of viewport denoising in cycles with  both CPU and certain non RTX GPUs.
From the Cycles release notes

GPU Rendering

OptiX support is now enabled on all NVIDIA GPUs that support it,    which is Maxwell or higher (GeForce 700, 800, 900, 1000 series).

NVLink support for CUDA and OptiX. When enabled in the Cycles device    preferences, GPUs connected with an NVLink bridge will share
memory    to support rendering bigger scenes.

NVIDIA GPU rendering on macOS is no longer supported. Apple dropped    support for CUDA drivers in macOS 10.14, and no recent Apple hardware
uses NVIDIA graphics cards.





Viewport Denoising
Intel OpenImageDenoise is now supported for interactive denoising in
the 3D viewport. This works on any recent Intel/AMD CPU (with SSE
4.1).
Previously viewport denoising was only supported for NVIDIA GPUs using
OptiX.