DirectX 12 rumored allow AMD and Nvidia cards on same PC

Microsoft's upcoming DirectX 12 is rumoured to feature a revolutionary API that would enable users to combine graphics cards from AMD and Nvidia.

PC gaming enthusiasts could be in for a treat if the latest rumour from Tom's Hardware is true. So far gamers have been able to combine multiple AMD cards or Nvidia cards using Crossfire or SLI, respectively but they cannot be combined with each other.

However, the latest rumour suggests that Microsoft could make such a combination possible and remove the dependence on manufacturer restrictions with its next DirectX release in Windows 10.
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Read more: DirectX 12 rumoured to allow combining AMD and Nvidia cards on same PC
 
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Why would they want to do it? What's in it for them? Probably only result in really pizzing off AMD and Nvidia.
 

My Computer

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    Windows 8.1 Pro 64-bit
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    Acer V3 771G-6443
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    i5-3230m
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    Acer VA70_HC (U3E1)
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    8GB DDR3 PC3-12800 (800 MHz)
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    HD4000 + GeForce GT 730M
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    Realtek High Definition Audio
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    17" Generic PnP Display on Intel HD Graphics 4000
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It sounds like you could run two mismatched NVidia cards in SLI or two mismatched AMD cards in Crossfire. Software wise. Right now they have to be identical cards to use a bridge. I'm talking about desktop PC's, not laptops with hybrid crossfire or switchable graphics. I'm not sure I'd want to run an AMD and a NVidia card that way?
 

My Computer

System One

  • OS
    Windows 10 Education 64 Bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Asus
    CPU
    AMD Phenom II X4 980 Black Edition Deneb 3.7GHz
    Motherboard
    ASUS M4N68T-M V2 µATX Motherboard
    Memory
    8GB 4GBx2 Kingston PC10600 DDR3 1333 Memory
    Graphics Card(s)
    NVIDIA Geforce GT640 2 Gig DDR3 PCIe
    Sound Card
    VIA VT1708s High Definition Audio 8-channel Onboard
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    22" LG E2242 1080p and 2 19" I-INC AG191D
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    1280x1024 - 1920x1080 - 1280x1024
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    Crucial MX100 256 GB SSD and 500 GB WD Blue SATA
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    Thermaltake TR 620
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    Power Up Black ATX Mid-Tower Case
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    Stock heatsink fan
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    Logitech Wireless K350 Wave
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    80 Mbps Down 30 Mbps Up
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    Internet Explorer 11
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    HP DVD1040e Lightscribe - External USB2
I'd be genuinely surprised if a change in Directx, resulted in a change in how crossfire works- but who knows?
 

My Computer

System One

  • OS
    Win 8.1 Pro
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Built
    CPU
    Intel i5-4590
    Motherboard
    MSI h97 PC Mate
    Memory
    Kingston Valu Ram 2 x 8 gb
    Graphics Card(s)
    Radeon r7 265
    Monitor(s) Displays
    Viewsonic 22" flat display
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung 250 gb 840 evo SSD,
    WD Blue 1 TB HD,
    Fantom 2 TB ext HD
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    Corsair 600 W
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    Antec 1
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    stock CPU cooler, 4 x case fans, GPU fan and P/S fan
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    HP ps/2 keyboard
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    Logitech Trackman Marble
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    50 mb/s
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    Chrome
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    Norton Security Suite
It won't affect Crossfire directly. It's for when you can't use Crossfire. That's how I read it anyway. There really isn't a whole lot of info in there.
 

My Computer

System One

  • OS
    Windows 10 Education 64 Bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Asus
    CPU
    AMD Phenom II X4 980 Black Edition Deneb 3.7GHz
    Motherboard
    ASUS M4N68T-M V2 µATX Motherboard
    Memory
    8GB 4GBx2 Kingston PC10600 DDR3 1333 Memory
    Graphics Card(s)
    NVIDIA Geforce GT640 2 Gig DDR3 PCIe
    Sound Card
    VIA VT1708s High Definition Audio 8-channel Onboard
    Monitor(s) Displays
    22" LG E2242 1080p and 2 19" I-INC AG191D
    Screen Resolution
    1280x1024 - 1920x1080 - 1280x1024
    Hard Drives
    Crucial MX100 256 GB SSD and 500 GB WD Blue SATA
    PSU
    Thermaltake TR 620
    Case
    Power Up Black ATX Mid-Tower Case
    Cooling
    Stock heatsink fan
    Keyboard
    Logitech Wireless K350 Wave
    Mouse
    Logitech M570 Trackball and T650 TouchPad
    Internet Speed
    80 Mbps Down 30 Mbps Up
    Browser
    Internet Explorer 11
    Antivirus
    Windows Defender
    Other Info
    HP DVD1040e Lightscribe - External USB2
I am going to speculate that you will be able to use 1 GPU as a number-cruncher, while the other GPU renders video- but like you said, there isn't much info in that article to go on.
 

My Computer

System One

  • OS
    Win 8.1 Pro
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Built
    CPU
    Intel i5-4590
    Motherboard
    MSI h97 PC Mate
    Memory
    Kingston Valu Ram 2 x 8 gb
    Graphics Card(s)
    Radeon r7 265
    Monitor(s) Displays
    Viewsonic 22" flat display
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung 250 gb 840 evo SSD,
    WD Blue 1 TB HD,
    Fantom 2 TB ext HD
    PSU
    Corsair 600 W
    Case
    Antec 1
    Cooling
    stock CPU cooler, 4 x case fans, GPU fan and P/S fan
    Keyboard
    HP ps/2 keyboard
    Mouse
    Logitech Trackman Marble
    Internet Speed
    50 mb/s
    Browser
    Chrome
    Antivirus
    Norton Security Suite
As far as I understood DX12 GPU aggregation will make possible the use of any combination of cards, distributing rendering tasks asynchronously according to each GPU capability.
 

My Computer

System One

  • OS
    Windows 10.0.10122
    Computer type
    PC/Desktop
    System Manufacturer/Model
    My Build - Vorttex Ultimate
    CPU
    Core i7 @ 4500 MHz
    Motherboard
    ASUS Z87-Plus
    Memory
    32GB DDR3 @ 1822 MHz (OC)
    Graphics Card(s)
    Radeon R9 280X 3GB @ 1180 / 6800 MHz
    Sound Card
    7.1 HDA
    Monitor(s) Displays
    LCD LG 22" + CRT LG 17"
    Screen Resolution
    1760 x 1320 / 1280 x 960
    Hard Drives
    1 x 240 GB SSD (System)
    3 x 500 GB HDD (Data/Media)
    1 x 2000 GB e-HDD (Backup)
    PSU
    ThermalTake 1000W PSU
    Case
    Corsair Carbide R300
    Cooling
    Corsair H60 (Push-Pull)
    Keyboard
    Microsoft Wireless Keyboard
    Mouse
    Microsoft Wireless Mouse
    Internet Speed
    60 Mbps (Down) 5 Mbps (Up)
    Browser
    IE, FF, Chrome
    Antivirus
    AVG Internet Security 2015
    Other Info
    Some wired stuff
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