[Blender] Dramatically boost render speed with OpenImage Denoise

[hngg]

Blender 2.9 adds a ton of speed improvements. Intel's OpenImage Denoiser and the Cycles adaptive samples options are two features that can really speed things up for those of us without RTX Nvidia cards (you guys should try Optix).

Below are my results with various render settings. Scenes were rendered on an overclocked AMD RX5700 on a system with 16GB of RAM.​

Scene​	Number of Samples​	Render Time​	​
​	100+Denoise​	40 Seconds​	1x​
BMW (1080p)​	1000+Adaptive+Denoise​	220 Seconds​	5.5x​
​	10000+Adaptive​	327 Seconds​	8.2x​
​	​	​	​
​	Number of Samples​	Render Time​	​
​	100+Denoise​	333 Seconds​	1.0x​
Playfull Witch (4K)​	1000+Adaptive+Denoise​	4620 Seconds​	13.9x​
​	10000+Adaptive​	6540 Seconds​	19.6x​

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Please feel free to post your results below!​

 

[mrkhing]

I actually tend to use the OpenImage Denoiser for the final render even though I have an Nvidia card. OIDN seems to have better results depending on the material. However, Optix is considerably faster which make it ideal for the viewport since they added the viewport denoiser option in 2.9

100 samples, noisy image:


OpenImage Denoiser:


Optix:

 

[Deleted member 1121028]

Can't wait for full denoised blender skin.
Gonna be great. Or so tho.

 

[hngg]

The really nice thing about OIDN is that it doesn't destroy detail in areas that don't have a lot of noise; it's pretty much safe to leave it enabled all of the time because of this.