New rx480 crossfire question

[Rextdwa]

Will I be able to crossfire r9 380 and rx480? Im thinking about eventually running 2 rx480, but dont want to do it right off the bat, when the time is right ill sell the r9, but i dont want to sit there with no graphic card whatsoever for a week or more

[Telebubbies]

12 minutes ago, Rextdwa said:

Will I be able to crossfire r9 380 and rx480? Im thinking about eventually running 2 rx480, but dont want to do it right off the bat, when the time is right ill sell the r9, but i dont want to sit there with no graphic card whatsoever for a week or more

No you cannot crossfire them. They have to be the same card. 

Well, that is how it is for nVidia cards. Not sure about AMD. 

[Glenwing]

1 minute ago, Telebubbies said:

No you cannot crossfire them. They have to be the same card. 

Well, that is how it is for nVidia cards. Not sure about AMD. 

With AMD you can crossfire different cards as long as they use the same GPU, even if they are different configurations. For example, an R9 280X uses a Tahiti GPU with all 2048 cores enabled, while the R9 280 uses a Tahiti GPU with only 1792 cores enabled. Those two cards are compatible in crossfire. But the R9 285, which uses a Tonga core with 1792 cores enabled, is not compatible in crossfire with the others.

[DarkBlade2117]

3 minutes ago, Telebubbies said:

No you cannot crossfire them. They have to be the same card. 

Well, that is how it is for nVidia cards. Not sure about AMD. 

AMD it has to be same Architecture.

That's why you can crossfire a HD7870 and R9 380. ( I think )

As for 480 and 380? No, though in DX12 you can. In DX12 you could CF/SLI the 1070 and 480 if you so chose to.

[Enderman]

3 minutes ago, DarkBlade2117 said:

As for 480 and 380? No, though in DX12 you can. In DX12 you could CF/SLI the 1070 and 480 if you so chose to.

just because DX12 supports it doesnt mean the game or GPU drivers will allow it

[DarkBlade2117]

2 minutes ago, Enderman said:

just because DX12 supports it doesnt mean the game or GPU drivers will allow it

If the game supports DX12 it will support it. This isn't a driver thing, NVidia nor AMD can't do shit about it. Digital Foundry has already done benches with the Fury X and 980Ti together and it scaled pretty decently.
There was already a big thread or argument within a thread about how nvidia "would just disable it" but that dude got shit on pretty hard.

[Enderman]

2 minutes ago, DarkBlade2117 said:

If the game supports DX12 it will support it. This isn't a driver thing, NVidia nor AMD can't do shit about it. Digital Foundry has already done benches with the Fury X and 980Ti together and it scaled pretty decently.
There was already a big thread or argument within a thread about how nvidia "would just disable it" but that dude got shit on pretty hard.

yeah but go look at how many DX12 games actually with work with different GPUs

like one

[Dackzy]

2 minutes ago, Enderman said:

just because DX12 supports it doesnt mean the game or GPU drivers will allow it

@Prysin got a APU and a GTX 950 I think it was to SLI/CF oh and AMD and Nvidia can't do anything about it.

[DarkBlade2117]

1 minute ago, Enderman said:

yeah but go look at how many DX12 games actually with work with different GPUs

like one

How long has it been since you went full stupid on the forum? I don't think you understand, No one can do SHIT about it if the game is DX12.

[Enderman]

1 minute ago, DarkBlade2117 said:

How long has it been since you went full stupid on the forum? I don't think you understand, No one can do SHIT about it if the game is DX12.

uh

you have to code the game to be able to work like that...

 

if you think having a game use DX12 or whatever automatically makes SLI work because "oh DX12 supports it" then you're an idiot

[ivan134]

9 minutes ago, DarkBlade2117 said:

AMD it has to be same Architecture.

That's why you can crossfire a HD7870 and R9 380. ( I think )

As for 480 and 380? No, though in DX12 you can. In DX12 you could CF/SLI the 1070 and 480 if you so chose to.

You can't cross fire a 7870 with a 380. Not even remotely close to being the same chip. 

[Domifi]

4 minutes ago, ivan134 said:

You can't cross fire a 7870 with a 380. Not even remotely close to being the same chip. 

I think he confused the 7870 with the 7950 and the 380 with the 280

[ivan134]

1 minute ago, Domifi said:

I think he confused the 7870 with the 7950

Even then you can't cross fire those. He was really far off. 

[DarkBlade2117]

1 minute ago, ivan134 said:

Even then you can't cross fire those. He was really far off. 

You must of missed the ( I think? )

Yes I confused 7870 for 7950, I purposely said 380 but forgot it wasn't based off the same chip as the 280.

[WkdPaul]

4 minutes ago, Domifi said:

I think he confused the 7870 with the 7950

the 7870 can be in crossfire with a 270x, not with a 7950 or 380.

[Prysin]

40 minutes ago, wkdpaul said:

the 7870 can be in crossfire with a 270x, not with a 7950 or 380.

the GCN 1 cards pretty much cannot CF at all with either Nvidia or XDMA based AMD cards because THEY DO NOT SUPPORT XDMA

 

Nvidia has always had SOME data go over PCIe (but the cards arent designed to use the PCIe, so they stutter and mis-sync badly once they use it).

56 minutes ago, Enderman said:

just because DX12 supports it doesnt mean the game or GPU drivers will allow it

Sure, the game engine has to support it.

GPU drivers doesnt matter.

 

You know, during Fermi era, Nvidia allowed you to use a AMD GPU as primary and a Nvidia GPU purely for PhysX? Well, they dont anymore. Under DX 11 and older, Nvidia control panel gets locked if a AMD GPU is the primary graphics engine.

I know this because i can only CF the 950 and the APU if i use the APU as the primary GPU. If i use the 950 as primary, the GeForce drivers litterally BSOD's my PC.....

 

That being said. OXIDE Games, the creators of Ashes, has said in HUGE BOLD LETTERS. DO NOT TRY TO USE MULTI-GPU WITH A INTERGRATED GPU.

But i didnt listen.

 

End result. 950 + APU = faster then 950.