My Render Results - A few doubts

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#1

I’ll be honest. I didn’t completely understand all of what this lecture had to teach. I mean i think I’ve understood bits of what this lecture was about, but I haven’t got all of it.
Can anybody please summarize it for me?
Here are my results by the way:
My time:
Default
CPU: Ryzen 5 1600X
GPU: Nvidia GTX 1060 6 GB
OS: Windows 10 Home 64bit
Time: 2 min 27 seconds (GPU - CUDA)
Time: 2 min 22 sec (CPU)

Device Resolution Tiles Time
GPU 960 x 540 128 0:58
CPU 960 x 540 128 1:00
GPU 1920 x 1080 64 2:22
CPU 1920 x 1080 64 2:22
GPU 1920 x 1080 32 2:18
CPU 1920 x 1080 32 2:15
GPU 1920 x 1080 16 2:13
CPU 1920 x 1080 16 2:14

I noticed one thing, even when i rendered using GPU compute, in Task Manager, my CPU usage woul;d always shoot up to 100%

#2

Sure.

Basically, the goal is to optimize the image in such a way (for your particular machine) that the time it takes to render it is low, all the while retaining the quality you’d want. That’s the purpose. When you render the scene, it takes time for your machine to go through the image to make it understandable to your eye. It has to do a lot of calculations to show where the dots (pixels) are and what they should look like when you take into account lighting conditions. The more quality you demand, the more the render time goes up. There’s a middle ground, nonetheless. You want to aim for that. Your machine seems good (a lot better than my laptop), so I think you got nothing to worry about. My machine runs a bad 635m and a sad Intel 3210 @ 2.5 ghz (what’s that, 5 generations ago?). So, yeah. Don’t worry too much about these things. Just make sure it is a reasonable time to render.

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#3

Thanks, that helps.!

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