What is better for rendering?

Hello, I have been working on renders and noticed some renders have some distortion, Here it is:

I use Blender for my renders, and use cycles on CPU. My CPU is an Ryzen 7 3700X 8 Core. Should I switch to my GPU? My GPU is an AMD Radeon RX 5700XT.

That’s just noise. You can denoise it using a program or re-render it with denoising enabled.

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Following what @VegetationBush said here’s a tutorial on how to remove noise here.

This tutorial is only for Blender 2.9 by the way.