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GObonzo
28 July 2015 15:41:17
Over the last couple years I have read and heard quite a bit about DX12 and what improvements and new features it may be bringing. Two I am really interested in are the cross manufacturer compatibility, AMD & Nvidia working in tandem, and the VRAM stacking option.
Has anyone running multiple cards in Windows 10 RTM experienced either of the these two "phenomena"?
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rgd1101
28 July 2015 15:46:37
There isn't a game support DirectX 12 yet.
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ESPclipse
28 July 2015 15:47:33
VRAM stacking is meant to be implemented with DX12. AMD has already done it with the Mantle API, so it's pretty much a shoe-in for AMD cards at least. Cross-manufacturer support will be supported, but will not experience scaling of matched cards, no doubt.
Don't shake the lightbulb
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GObonzo
28 July 2015 15:56:44
DX12 is already implemented in Windows 10. Hence why I ask if anyone is experiencing the stacking or cross GPU results. Not asking if you also believe it will implemented, but if you are experiencing it.
I haven't ever seen a report of a Mantle supported game allowing VRAM stacking by turning on Mantle in game settings. And all the arguments about GPUs and explanations about VRAM mirroring I have never read anyone claiming while using a Mantle supported game that their VRAM was "stacked".
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GObonzo
28 July 2015 16:02:38
rgd1101 said:
There isn't a game support DirectX 12 yet.
that should have nothing to do with how the system's API reads your GPU(s). even if what you said was relevant, 3DMark's API tests should show your memory stacked.
but even in Windows 10, using the correct GPU drivers, VRAM should still show as stacked or mirrored and the cross manufacturer cards should both still show in system information instead of just the one you've chosen through BIOS. if it is being implemented yet.
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Jezzyjz
less than a minute ago
no programs or games have been written to take advantage of these features you speak of in dx12. stacking WILL NOT occur unless the game has been written that way!!! listen to what I'm saying here OK, none of the older games/software will allow stacking of your cards vram, by old I mean gta 5, witcher 3 etc. the only way they would allow stacking is if the developers were to rewrite these games to stack vram. now look at this logically, THAT IS NOT going to happen OK. however developers will no doubt release programs and games in the future to allow these features in dx12, but that's solely dependant on the developers, NOT THE CARDS. also, to take advantage of all the features of dx12 you will need a nvidia 900 series card. anyone saying anything different to this are stupid or talking bull.