Here’s a screenshot of the “System” page of the User Preferences I’ve got:
The “Cycles Compute Device” is a little different from the tutorial as there’s an “OpenSubdiv” option below it. Also, the GPU option is listed as “GeForce GT 740M (Display)”. I’m guessing that this is because I’m on a laptop with a built-in GPU, but thought I’d flag it in case it’s significant.
Here’s a screenshot of my first render test (and quickest!):
The CPU/GPU selection on the Render option panel is greyed out, although I can still flip between the two.
The render times I achieved with differing settings are:
CPU 128x128: 5:08.74 (5:06.17 when repeated next day)
CPU 64x64: 5:10.49
GPU 128x128: 5:12.36
GPU 256x256: 5:51.20
CPU 256x256: 6:02.45
I also tried swapping over to “Blender Render” just to see what would happen, and got a solid-grey scene. But at least I got it 4.2 seconds, which is nice 
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I have the same extra option as you, except im on a desktop and i believe my tower has its GPU built in as well. It’s a slim Asus GOR G20AJ Rogue. I think that most slims have the built in GPU as well as laptops for space. Im not a hardware expert so could be wrong. I left my Opensubdiv compute to “none” and it works fine.
@Poulet_Noir Did you play around with the Opensubdiv option? if so does it effect anything?
Hi @CookieEater, no I didn’t touch it. I’m a “Don’t poke that unknown thing” kinda guy!
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Cool, thanks for the link Marc!
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@Poulet_Noir im a kind of mess it up and hurt my brain to try to figure it out guy haha
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Here are my Times. I am thinking about getting the new AMD Ryzen 1700x once it gets a little cheaper since the I7 is beyond my budget, and maybe the gtx 1060 6GB one or the other.
Blender 2.7 Cycles Benchmark rev4
“Now with twice the orange!”
Set Up
CPU: AMD FX 6300 6 core 3.5 ghz
GPU: Nvidia GTX 750
OS: Windows 10 64 bit
Res: X 1920 px Y 1080 px
GPU CUDA
Time : 3mins 26 sec
Tile size
Center X 240, Y 180 (auto)
Tile Size
Center X 950, Y 540
Time 5 Mins 29 sec
CPU
Tile Size
Center X 950, Y 540
TIme 50 mins Estimated
CPU
Tile Size
Center X 32, Y 32 (Auto)
Times 7 mins Estimated
Hello all! Here is what my computer could do:
My best time: CPU: 3 minutes 23.63 seconds
Best GPU time: 9 minutes 54.63 seconds
My computer set-up:
Open CL
Intel HD Graphics 630 1536 MB
Dedicated GPU: Radeon Pro 560 4GB
OS: macOS High Sierra, MacBook Pro
So here are my results and findings:
I have played with the OpenSubdiv compute modes available under “System” in Blender 2.79 and found interesting differences.
CPU: Intel i7 3.6Ghz
GPU: Nvidia GTX 1060 3GB
OS: Windows 10 64bit
Results:
GPU - OpenMP
GPU: 1060 (128x128)
Time: 1 min 45 Seconds
GPU: 1060 (256x256)
Time: 1 min 28 seconds
GPU: 1060 (512x512)
Time: 1 min 27 seconds
GPU: 1060 (960x540)
Time: 1 min 44 seconds
GPU - GLSL Transform Feedback
GPU: 1060 (960x540)
Time: 1 min 36 seconds
GPU: 1060 (512x512)
Time: 1 min 37 seconds
GPU - GLSL Compute
GPU: 1060 (512x512)
Time: 1 min 32 seconds
GPU - CPU
GPU: 1060 (512x512)
Time: 1 min 27 seconds
GPU - None
GPU: 1060 (512x512)
Time: 1 min 25 seconds
[ CPU ]
CPU: i7 (16x16)
Time: 3 min 20 seconds
Here are my times only did 4 because my computer is very slow, my best time was 9min ;(
My GPU does is about twice as fast as my CPU and I got a GTX 760. I did run into CUDA error called illegal addres, but I restarted Blender and changed the start resolution in the performance tab to match the tiles and it worked okay
With the defaults settings for rendering in the lesson:
GPU Compute on a GeForce GTX 675MX
Tiles - X: 128 and Y: 128
The render time was 13:05.57
Now switching back to CPU I got a better rendering time of 05:40.31
Overall the image came out the same but the rendering times were different. So I guessing that some more testing will have to be done. But it is looking like the CPU might be my best bet when it comes to rendering.
