Win10 support 8 GPUs with Xpander rackmount 8?

Hi all,

I have a new Supermicro 7049GP-TRT with two Xeon Gold CPUs.

The BMD Resolve 16 CentOS 7.3 ISO does not support for Supermicro 7049GP-TRT which has VGA onboard issue.

Just wondering dose this Win10 OS PC support 9 (w/GUI) Nvidia RTX2080Ti GPUs with Cubix XPANDER RACKMOUNT 8?

I installed DR16.1.1 on Win10 and i could see 9 GPUs on it. But not sure if these GPUs are both working for DR.

In my memory that Windows OS only support 4 GPUs for DR or my information is not right

Therefore this workstation don't need Linux OS if i need 9 GPUs right?

I wonder if you're really going to get the performance boost you expect. Multiple graphic cards with low bandwidth interfaces may be OK for bitcoin mining if the ratio of computer to data transfer is high. A video frame is a lot of data, will the system be able to transfer data to all of these GPUs fast enough to keep them busy? Particularly if a x16 interface is reduced to a x2 because it has to share it with 7 other cards. And at 9 cards does each one drop back to a x1?

Agreed and mentioned in a few other posts. Expanders for resolve or similar image processing application useage are all but useless unless you can drive each card with minimum x8. Diff / loss between x8 and x16 is low enough to be offset massively by extra x8 card(s) gain.
You could save youself a lot of money by replacing a 2080ti at x1 or x2 speed with a 20$ trash card. Will do the same likely.
Would be an interesting test to compare performance of a single el cheapo GPU at x16 with 8x2080ti at x1 or x2. Will call Linus

AFAIK windows and mac upto 4 GPU's, Linux upto 8 GPU's.
More than 1 GPU won't bring you much speed increase, only in very specific cases you gain a serious amount of speed.

[Peter Chamberlain]

Resolve does not limit the GPU count for macOS or Windows, this limit is by bios, or OS or drivers.

You definitely can get more performance from multiple GPUs but you have to config the system correctly and have processing needs that use the extra power. That said, for many users, one very good GPU is much better than two average GPUs.

Resolve does not limit the GPU count for macOS or Windows, this limit is by bios, or OS or drivers.

You definitely can get more performance from multiple GPUs but you have to config the system correctly and have processing needs that use the extra power. That said, for many users, one very good GPU is much better than two average GPUs.

Which processes can benefit from multiple GPU's in Resolve?
System AMD EPYC ROME series with 4x 16 slots PCIe3/4 lanes and 4 Radeon VII's with 16 GB/1 TB/s VRAM, 10 GByte/s r/w NVMe storage.
Workflow BRAW 6k Q0 24 fps and 6k X-OCN XT 24 fps.

Resolve does not limit the GPU count for macOS or Windows, this limit is by bios, or OS or drivers.

You definitely can get more performance from multiple GPUs but you have to config the system correctly and have processing needs that use the extra power. That said, for many users, one very good GPU is much better than two average GPUs.

Thanks Peter for reply.

So dose Win10 support more than 4 GPUs?

My Supermicro 7049GP-TRT BIOS configure just set as DaVinci Resolve 15 Configuration Guide.

So i should not use expanders for more GPUs? Then why Configuration Guide suggest this.

Or should i use 2 very nice GPU more CUDA CORES then GTX 2080ti? Like NVIDIA TITAN V?

DaVinci Resolve use CUDA CORES right?

Resolve does not limit the GPU count for macOS or Windows, this limit is by bios, or OS or drivers.

You definitely can get more performance from multiple GPUs but you have to config the system correctly and have processing needs that use the extra power. That said, for many users, one very good GPU is much better than two average GPUs.

Thanks Peter for reply.

So dose Win10 support more than 4 GPUs?

No

My Supermicro 7049GP-TRT BIOS configure just set as DaVinci Resolve 15 Configuration Guide.

So i should not use expanders for more GPUs? Then why Configuration Guide suggest this.

To be able to utilize those GPUs, for example support 8 GPU at x16, you need a MB with CPUs that can provide 128 lanes. But if you don't have those, usually most users have a 28 to 32 lanes, 1 or 2 GPUs will be much better since you have 16 lanes for each gpu. But if you have only 32 lanes with 8 GPU, each gpu will only have 4 lanes or less for it, depending what other pci cards you have too.

Or should i use 2 very nice GPU more CUDA CORES then GTX 2080ti? Like NVIDIA TITAN V?

Yeah, if your cpu and mb has 40 lanes, go with a couple GTX 2080ti.

One other factor that could be significant when you have 8 GPUs is whether or not the CPU can service all of those GPUs at the same time, even if data is not bottlenecked on the PCI bus by having too few PCI lanes per GPU.