Why denoise result is different using same rtx graphics card?

[baoxiaohe_developer]

Same vrscene
Machine 1

[VRay][Info] VDenoise: Using device 0: NVIDIA GeForce RTX 3080
[VRay][Info] VDenoise: Driver version 528.49

[VRay][Info] VDenoise: OpenCL compiled successfuly
[VRay][Info] Render elements to be denoised:
[VRay][Info] RGB color
[VRay][Info] Alpha
[VRay][Info] Denoising complete in 1.14 s

Machine 2

[VRay][Info] VDenoise: Using device 0: NVIDIA GeForce RTX 3080
[VRay][Info] VDenoise: Driver version 511.17

[VRay][Info] VDenoise: OpenCL compiled successfuly
[VRay][Info] Render elements to be denoised:
[VRay][Info] RGB color
[VRay][Info] Alpha
[VRay][Info] Denoising complete in 0.73 s

Machine 1 result image is better than machine 2. why? Driver version?


App sdk version appsdk-win_qt5-nightly-vray_v5.20.24-20230218
OS windows server 2022 standard

[stanislav.kirilov]

Probably the final images before denoising were different.

[baoxiaohe_developer]

stanislav.kirilov
Two machines are running the same program with the same config(bucket rendering)
Machine 1 cpu: AMD EPYC 7763 clockspeed 2.5 GHz
Machine 2 cpu: AMD Ryzen 7 5800X clockspeed 3.80 GHz
Will the clockspeed influence the result image?
And can I denoise the image many times?