RenderTargets is equal to GPU render, is or not? And what's different between CPU render and GPU render?

@arunoda
Thank you.
I see a few webpages talked about materials and render target simply and pure data operations running on the GPU, and the data is point clouds not geometry. So i confused about the work of GPU. I show you the links and the screenshoots maybe can use to understand GPU much better and active a new relatived topic to discuss further:

http://fullofstars.de/materials-for-location-and-color.html
企业微信截图_1621935677325

http://fullofstars.de/data-flow.html