Nvidia and AMD Cross Multi GPU Tested In DirectX 12

Athlonite

2015-10-27 07:00

I'd like to know why does it require a DirectX 12 game for this to work it should have been built into windows 10 and available for all game regardless the engine running the game maybe directX 10 and up would have been a better thought

#5178434

Fox2232

2015-10-27 07:17

it cant.. the director of oxidie said that mda can not be locked out with drivers. it is engine specific the gpu has nothing to say about it

But nVidia is still able to detect presence of AMD drivers/HW ID...

#5178438

Lowice

2015-10-27 08:11

Sad a monster card like 980ti and fury get so low fps... Still sticking to 1080p then since I do not like to play with under 60fps.

#5178443

leszy

2015-10-27 08:48

The main thing is that thanks to this feature, we can simultaneously use dGPU and iGPU of APU. Incoming ZEN APU can be the best gaming processor.

#5178449

Redemption80

2015-10-27 08:59

Nice to see this being attempted, and as each vendor has strengths that the other lacks you can see how it could be used well. Don't see it taking off though, multi GPU gaming is annoying enough as it is without mixing drivers from two GPU's. Maybe I missed it, but couldn't see anything mentioning how the vram situation works with this, 4GB if mixing a 980ti with a Fury X, what about HBM?

#5178538

mR Yellow

2015-10-27 13:32

Nice to see this being attempted, and as each vendor has strengths that the other lacks you can see how it could be used well. Don't see it taking off though, multi GPU gaming is annoying enough as it is without mixing drivers from two GPU's. Maybe I missed it, but couldn't see anything mentioning how the vram situation works with this, 4GB if mixing a 980ti with a Fury X, what about HBM?

The point is you could add a spare relatively cheap dx12 card to your rig to get a boost.

#5178547

Fox2232

2015-10-27 14:02

SFR/Tile Based rendering is one thing I need before I'll consider multi GPU, even if that is at cost of part of performance due to post-processing taking place afterwards. Reducing fps a bit or at cost of having deeper flip queue than 1 or 2. But having 2 frame lag at 180fps is not bad at all in comparison to having 1 frame lag on 60 fps.

#5178564

ETAxDOA

2015-10-27 14:35

2x7990 So two 7990's would.... , act as four 7970's with 3gb per card (12gb total) :-D , or act as two 7990's with 3gb per card (6gb total) 🙂 , or act as one card with 3gb :-( ???

#5178571

Seketh

2015-10-27 14:56

Definitely would not hold my breath waiting on that...Highly unlikely...;) HD4600 is a performance dog next to your 7970 and its only likely effect would be to slow everything way down--if it would even be possible--I doubt anyone could get it working in the first place even if they wanted to...the disparity between the gpus is just too great. Ideally, of course, you'd want two (or more) identical cards--but keep in mind that the really neat features in D3d12 have to (a) be supported in hardware and (b) supported by the game itself--especially these features, or for instance the feature that would give you a giant single GPU with >~5,000 stream processors (2x2500 sps)and ~16GBs (2x8GBs) of ram... 🤓 etc., etc. I'm thinking that these features will be included in several mainstream game engines (like Valve's or Epic's, etc.) so that a developer using these engines for his game would have all the grunt work relative to the nice D3d12 feature support already done for him. I mean, really, a GPU from nVidia/Intel paired with a GPU from AMD wouldn't be a very appealing concept for a number of reasons...right? At least with two like GPUs you have a fighting chance to do Crossfire or SLI in d3d11 and < games. With a mixed pair, no can do. It's a great novelty but I suspect that other configurations will be far more appealing to the majority of people. Makes for sensational articles, though, even if few people will seriously ever do it.

Actually, you're wrong. Microsoft demonstrated it themselves: http://blogs.msdn.com/cfs-filesystemfile.ashx/__key/communityserver-blogs-components-weblogfiles/00-00-01-20-72/3730.multiadapter_2D00_dx12_2D00_ue4_2D00_2.png

#5178587

blkspade

2015-10-27 15:34

If it cant do A.I. then it should be able to do some crowd behaviour atleast so 1000s of units find their way quicker. I saw someone doing this with a titan.

Its not that it can't be done (its supposedly a theoretical possibility with DirectCompute), just that no one is doing it and its been an option since DX10. It's either ridiculously hard to code for, or devs aren't finding any incentive to do AI this way.

#5178613

fantaskarsef

2015-10-27 16:49

980ti bit faster than a fury x 1440p, all those nonsense threads in the amd section about maxwell and dx12. All it took was a driver update. Remember 1 guy who said do not expect nvidia to gain dx 12 performance with drivers. Good stuff.

QFT. Also, if you happen to have a Fury X and a 980Ti, and different games need different 'first' cards, it takes the practical use out of it. Not everybody can and wants to switch cards in his rig just because he's switching back and forth through games. Same as I stated with the first Ashes 'benchmarks', too early to take this results as true and fixed and 'never going to change'.

#5178640

ManofGod

2015-10-27 17:42

Two thumbs up! 🙂

#5178801

Yecnot

2015-10-27 22:20

Yeah.... I have my HD7950 sitting on the shelf and I'd still pick up another GTX970 before I'd even consider throwing the 7950 back in to run along side my 970...

Why not?

#5178811

---TK---

2015-10-27 22:59

Sli has support for many many games.

#5181497

Merlena

2015-11-02 12:51

The way I feel it... You never know what nVidia can cook together, even if its good or bad. But it wouldn't surprise me if nVidia just came with some hidden code with a long-worked on driver that will reveal features we don't even know about.. :S or really I got no idea. But the GPU market and competition these days are more unpredictable than.. god damn anything.

#5181516

Barry J

2015-11-02 13:39

QFT. Also, if you happen to have a Fury X and a 980Ti, and different games need different 'first' cards, it takes the practical use out of it. Not everybody can and wants to switch cards in his rig just because he's switching back and forth through games. Same as I stated with the first Ashes 'benchmarks', too early to take this results as true and fixed and 'never going to change'.

would be nice if in the options you could set your primary GPU that would make things much easier

#5181558

fantaskarsef

2015-11-02 14:39

That's true, to me personally the tech would only be halfly as useful if you can't do this by a software switch under your OS environment (not even rebooting into BIOS would be a practical way to solve this imo).