Hi there everyone.
First of thanks to the developers for their hard work!
Great new features. I am really excited.
I did a couple of tests that I want to share here.
I tried to make this as scientific as possible. I did a system restart before every test, also I kept the settings unchanged.
There were two tests for each setup (yes, a lot of restarts), the median values have been taken. They did not vary much though.
Thanks to
Cornelius Dämmrich for providing the scene and allowing me to use it as demonstration.
Unfortunately this scene is under copyright, so I con´t make it public.
I used it since it is a really complicated heavy scene built for production, not for testing and therefore might represent a closer to reality example of how Octane behaves under stress.
Here are my system specs:
Motherboard: ASUS X-99-E WS
Processor: i7 5960x, 8 Cores - 16 Threads, 3.0 GHz
Ram: 64 GB DDR4
Graphics: 3X GTX 1080 Ti (Reference Design)
PSU: 1500 W, Corsair AX 1500i
HDDs: Samsung 850, Samsung 840, 2 X Seagate 2 TB
CASE: Lian Li PC-X2000FN
The scene files were read of the Samsung 850 SSD
Octane 3.07 C4D
Scene Load --------------- 1:14 Min
Rendering 256 SSP ----- 1:55 Min
Average Ms/Sec ---------- 5.3 Ms/Sec
Scene Size ------------------ 5.60 GB
Scene Size & System --- 6.10 GB
System RAM -------------- 21.5 GB

- 3.07 C4D Octane
Octane 3.08 RC2 C4D
Scene Load --------------- 1:24 Min
Rendering 256 SSP ----- 1:47 Min
Average Ms/Sec --------- 5.6 Ms/Sec
Scene Size Vram -------- 5.60 GB
Overall Vram ------------- 6.10 GB
System RAM -------------- 22.0 GB

- 3.08 RC2 C4D Octane
Octane 3.07 Standalone
Opening ORBX ------------ 1:42 Min
Scene Load ----------------- 0:52 Min
Rendering 256 SSP ------ 2:03 Min
Average Ms/Sec ---------- 5.2 Ms/Sec
Scene Size Vram --------- 5.73 GB
Overall Vram -------------- 6.10 GB
System RAM -------------- 16.5 GB

- 3.07 Octane Standalone
Octane 3.08 RC2 Standalone
Opening ORBX ------------ 1:42 Min
Scene Load ----------------- 0:55 Min
Rendering 256 SSP ------ 1:55 Min
Average Ms/Sec ---------- 5.5 Ms/Sec
Scene Size Vram --------- 5.73 GB
Overall Vram -------------- 6.10 GB
System RAM -------------- 16.5 GB

- 3.08 RC2 Octane Standalone
Octane 4 XB1
Opening ORBX ------------ 1:40 Min
Scene Load ----------------- 0:22 Min
Rendering 256 SSP ------ 2:20 Min
Average Ms/Sec ---------- 4.3 Ms/Sec
Scene Size Vram --------- 7.07 GB
Overall Vram -------------- 7.45 GB
System RAM -------------- 17.5 GB

- 4.0 XB1 Octane Standalone
Octane 4 XB1 Denoising
Scene Size Vram----------- 8.95 GB
Overall Vram --------------- 9.72 GB
System RAM ---------------- 18.9 GB
Rendering 256 SSP ------- 2:22 Min

- 4.0 XB1 Octane Standalone Denoised
A couple of things:
Of course the C4D Version needs a lot more system RAM because the whole application with the scene has to run in the background.
There is a slight variation in the renders. This is because the scene was setup by Cornelius with a Coherent Ratio of 0.5
Unfortunately I not only noticed a slow down of the render speed by about 25 Sec. I also noticed a vastly increased V-Ram usage. Even without AI-Denoiser!
The V-Ram of the same scene goes up 1.34 GB from 5.73 GB to 7.07 GB.
I do understand that the AI-Denoiser needs some more data and therefore needs more V-Ram. But I would like to see the initial V-Ram being used staying the same as in the older versions of Octane.
Please note that this is not meant offensive in any way. I love octane and I thought when I share things like that I might help to make it better.