juhatakabe wrote:natemac00 wrote:
Take a look at my signature, I'm running (4) GPUs, not just the external.
Well, good for you!
Have you tried Octane without slave GPUs? How well single eGPU will perform? I know after having 4 GPUs running for you, single eGPU isn't much, but still.
As I mentioned I'm looking for GTX 1080 with Bizon setup, but not sure if that would be enough for simple animation renders.
Cheers!
@glimpse is right, it all depends on what you're working on. What I can say, is that a eGPU does not work any slower then an internal or a slave does. See a post with some numbers I put together below.
natemac00 wrote:So I just wanted to share some numbers I just ran. I was reading on some other forms about an eGPU not performing to par.
GPU: MSI GTX 980 Ti 6GD5 V1 PCIE
Computer 1: Win 10 64-PC |3.2GHz 4-Core i5-6500 | 16GB DDR4 | Internal PCIe
Computer 2: '13 Mac Pro | 2.7GHz 12-Core Xeon E5 | 64GB DDR3 | 10.11.3 | eGPU
Computer 3: '09 Mac Pro | 2x 2.6GHz 4-Core Xeon | 24GB DDR3 | 10.11.3 | Internal PCIe
PC Average: 117.097 (117.18 | 116.61 | 117.50)
'13 Mac Average: 111.847 (116.15 | 111.30 | 108.09)
'09 Mac Average: 117.86 (118.62 | 117.62 | 117.34)
So if our PC is our baseline the eGPU is running at 96% efficiency. I think that's pretty negligible in performance.
It's a linear speed increase depending on the GPUs you have.
We are holding off on buying any more 980Ti's to see what will happen with the 1080s once they come out. I'm not even sure how the mixture of GPU architectures will effect things (Maxwell & Pascal) Octane. I would hold off if you can otherwise, 980Ti will start going down in price and at the moment it is the best cost to performance GPU you can buy out there for Octane. There is always going to be something better around the corner. At some point you gotta just jump in.
I actually want to buy some GPUs.
