Does Direct X 12 work for older games?

[Componentgirl90]

Do the performance gains from direct X 12 work for older games? I dont quite udnerstand how it works. E.g. Would you be able to make use of the combined 4GB memory feature in crossfire from two 2GB cards in ANY game?

 

[crisan_tiberiu]

DX12 is designed for new software. old software is not suported. "Older" hardware is supported (well, dont expect pentium 4 to be supported 😛 😛 😛)

 

[rcj22001]

DX is used in the creation of the game (read programming/coding). It's a part of that specific game. The first games to use DX12 aren't expected until 2016.

 

[Componentgirl90]

Ok thank you

 

[renz496]

Do the performance gains from direct X 12 work for older games? I dont quite udnerstand how it works. E.g. Would you be able to make use of the combined 4GB memory feature in crossfire from two 2GB cards in ANY game?

to take advantage of Dx12 feature the game need to be made using DX12. so if older games want to benefit from DX12 the game need to be ported to DX12 first. as for the VRAM stacking it is not really that clear. not even MS have talk about that. so far only AMD specifically talk about it. until there is actually game that implement the VRAM stacking thingy we will not know much about it. but one thing is clear: it needs to be implemented by the game developer themselves. not something that automatically done when using DX12.

 

[Componentgirl90]

so its best to assume that most games out now won't support split frame rendering aka 4Gb RAM from two 2Gb Crossfire.

 

[renz496]

To be honest i don't know why people lump SFR and vram stacking together. If i'm not mistaken what AMD claim is vram stacking is possible with low level API. They never say about SFR are needed for that. But then again so far only AMD said about this VRAM stacking thingy. Nvidia nor MS themselves ever talk about it. So until there iw actual gane that implement the feature we will not going to know much of the detail about it