Octane X on iMac / which eGPU?

[bepeg4d]

Yes, I’m also very interested to know the performance of Big Navi GPUs, unfortunately it is not easy to find one here in Italy

If someone has a 6800/6900, please download the simple example scenes package for Standalone:
http://render.otoy.com/downloads/Octane ... oSuite.zip

Then open the chess_set_procedural.ocs scene in Standalone PR7, then click on the Render Target PT node, and share a screenshot, here is the result of my AMD Radeon Pro 575 4GB:

FDDC2F44-A4B2-4F4C-8587-595EFF86030A.jpeg

ciao Beppe

[blakeash2]

2019 MacBook Pro, 2.4 GHz 8-Core Intel Core i9, 64GB RAM

macOS Big Sur 11.4 Beta

Razer Core X Chroma

PowerColor Red Devil 6900 XT (extremely lucky I found this in stock at a store 1 hour away from my house)

Since the Red Devil has 3x 8 pin cables and Razer Core X has only 2, I bought a splitter, and plugged it in, and it works like a charm.

Splitter ~ [8 Pin Female to Dual 2X 8 Pin (6+2) Male]

I am not too familiar with the standalone Octane, as I use the C4D plugin, but I rendered that demo chess scene Render Target PT. Is this the screen shot you wanted or some other place?

[bepeg4d]

Hi,
thanks for the feedback, and render speed test!
Unfortunately the image is not visible, but here is the updated graph with latest results:

Happy Mac GPU rendering,
ciao Beppe

[Spinelli741]

Very good for OctaneX. About AMD GPUs for eGPU, at the moment I think that you can find only Radeon Pro 5700XT, and Radeon VII 16GB, but AMD has just presented new Radeon RX 6800/6800 XT/6900 XT that should be faster.

[bepeg4d]

Here is an AMD 6900 XT in Akitio eGPU box, connected to Mac Mini 2018 Thunderbolt 3, with Big Sur 11.4beta3:

It works great

ciao Beppe

[cjadams]

Whats the PSU on thT chassis?

iI have a breakaway box 550....but don't think it will handle a 6800 or 6900

[bepeg4d]

Hi,
the PSU is a 550W and seems to handle it very well, so also the Sonnet breakaway box should be able to handle it, it is exactly on the right in the picture… the issue is how to fit the beast inside it… it is huge

Since I’m currently losing one slot of my Akitio Duo, I have to place the 6900 inside the Sonnet me too, but I have to figure out how to correctly do it

Let me know if you find a clean solution.

ciao Beppe

[ciciolo]

Hi everyone, I hope it's fine to use this topic to ask something for my new MBP 16 2019 with a 5300M. I also have 3 Win PCs with 2080/2070/1080ti so I can save projects and render with once back at home/office, but what if I would use MBP + eGPU, to avoid move an entire pc (and monitor keyboard and mouse , of course). Is still worth to use them, even with TB's speed bottleneck?
Thanks for reply to this, and @beppe, I'm italian so maybe I will ask you in a better language
Have everyone a nice sunday

[bepeg4d]

Hi ciciolo,
I'm using eGPU TB3 boxes in both Mac and Win, and there is no speed bottleneck.
All the GPUs are running at average score in OctaneBench.

At least, you can have a slightly unnoticeable reduction of speed while loading the scene in GPUs, but, after loading, the speed is exactly the same.

ciao Beppe

[ciciolo]

Hi ciciolo,
I'm using eGPU TB3 boxes in both Mac and Win, and there is no speed bottleneck.
All the GPUs are running at average score in OctaneBench.

At least, you can have a slightly unnoticeable reduction of speed while loading the scene in GPUs, but, after loading, the speed is exactly the same.

ciao Beppe

Thanks Beppe!

now we have only to wait for prices drop

Grazie, ed a presto