AMD Radeon GFX & DirectX 12

LtMatt · 27 May 2015 at 17:06

DirectX 11 doesn't officially support multi-GPU. It doesn't prevent you from doing it, but it doesn’t help you do it. All the multi-GPU you’ve ever encountered have been robust and clever workarounds by IHVs and ISVs alike.

All of this changes in DirectX 12 with a new feature called “explicit multi adapter,” which brings more performance and flexibility to multi-GPU configurations than at any other point in the history of DirectX.

The world’s first information on confirmed DirectX® 12 games, which are AMD Gaming Evolved partners!

For more information on DirectX 12 and some of the performance benefits it's going to offer AMD users, check out the PDF below.

Download Link
https://www.sendspace.com/file/akr7bo

eyetrip · 27 May 2015 at 17:12

Bad time to be posting about AMD multi gpu support, no?

Hopefully when DX12 comes around me won't have the delays and issues of current.

Ayahuasca · 27 May 2015 at 17:12

When will it be ready?

slick rick · 27 May 2015 at 17:14

Will this make compiling Crossfire profile's quicker and easier or will it be the same?

Minstadave · 27 May 2015 at 17:21

Ayahuasca said:
When will it be ready?

"When it's ready."

AMD should not be touting their multi GPU support when they can't even get crossfire profiles out the door.

Andygully · 27 May 2015 at 17:25

Looks good if it all works as it should

Confused Stu · 27 May 2015 at 17:27

DX12 seems to put a lot of control in the hands of the developers. Given how often we see games released with issues that are then fixed by workarounds in the GPU driver, does this mean we're going to be getting a few years of broken games that AMD & Nvidia can't fix until all the developers get their heads around coding for the different GPUs properly? Or does DX12 still provide enough of a layer that coding issues by the developer can be fixed by a third party (AMD/Nvidia/MicroSoft?) as and when they occur?

I know it's probably just a case of time will tell, but wondered if I'd got this wrong in my head. At the moment it feels like we're removing all the driver aids in the car and expecting all drivers to be able to go faster without crashing!

TNA · 27 May 2015 at 17:27

slick rick said:
Will this make compiling Crossfire profile's quicker and easier or will it be the same?

This really.

JediFragger · 27 May 2015 at 17:28

If I was a betting man I'd say that the 290-series is going to be very strong when Win10/DX12 is released. It'll make the 980's look closer to the 960 :cool:

But that's just a semi-educated guess tbh, just hope I'm right for competitions sake

TNA · 27 May 2015 at 17:38

If this works properly and drivers work just like single cards, I may finally try out crossfire. Sounds promising. But drivers AMD, need drivers to work and be released consistently and certainly be ready for big game releases like Witcher 3!

Orangey · 27 May 2015 at 17:40

I don't see any of this being used tbh.

What happened to all the cool stuff?

chroniclard · 27 May 2015 at 17:41

Wont all this apply to NVidia too?

humbug · 27 May 2015 at 17:41

"now possible to combine GPU memory pools"

Does this mean, for example CF 2x 8GB GPU's will result in, 16GB of usable memory?

slick rick · 27 May 2015 at 17:44

humbug said:
"now possible to combine GPU memory pools"

Does this mean, for example CF 2x 8GB GPU's will result in, 16GB of usable memory?

Yeah, but is there enough bandwidth through PCI to make it viable I wonder?

mahius · 27 May 2015 at 17:45

So DX12 will make CF obsolete, since it'll do everything instead? Also if the memory thing is true... then the whole 3.5GB GTX970 thing will be a problem of the past for folks who SLI it. But I see AMD APUs really benefitting here, the processor graphics will actually be usable.

humbug · 27 May 2015 at 17:46

slick rick said:
Yeah, but is there enough bandwidth through PCI to make it viable I wonder?

PCIe 2 is yet to be saturated, how much faster is PCIe 3?

slick rick · 27 May 2015 at 17:49

humbug said:
PCIe 2 is yet to be saturated, how much faster in PCIe 3?

No idea mate. If it is possible and it actually gets implemented in games that would be a superb feature!

new boy · 27 May 2015 at 17:51

How well will existing AMD cards suport DX12 Matt? I know suporting, and fully suporting are things, and there is a wide gap in the middle, where will the 290(x) stand?

Orangey · 27 May 2015 at 17:53

Any PCIe will be laughably slow for memory access.

Finners · 27 May 2015 at 17:53

So will this take the burden off of AMD and put it onto the game developers to implement multi GPU's?

If new drivers are still needed every game for crossfire then I'd really be embarrassed to be posting this when your current support has been so poor lately.