Video drivers question

does the onboard chipset video need different drivers than the pcie cards , and does win vista 64 let you install 2 different video drivers ?

You have three options:
1)  Disable SLI and use 3 monitors on the VGA cards.
2)  Keep SLI enabled and use 2 monitors.
3)  Keep SLI and the onboard enabled with the risk of crashing.
This is a limitation of the driver/hardware and we can't really change that.
Quote from: Hans on 12-October-09, 02:00:59
Same driver.
I checked the driver, and they do both indeed use the same NV_disp driver:  (Pulled from the driver configuration file.)
Code: [Select]
NVIDIA_DEV.084D.01 = "NVIDIA nForce 750a SLI"
NVIDIA_DEV.0614.01 = "NVIDIA GeForce 9800 GT  "

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    INF : oem55.inf
    INF Section : ati2mtag_RV630
    GPU # 0001 Detected : ATI Radeon HD 2600 XT (Microsoft Corporation - WDDM v1.1)
    GPU DeviceId : pci\ven_1002&dev_9588
    Detected Driver(s) Version(s) : 8.97.10.6
    INF : oem55.inf
    INF Section : ati2mtag_RV630
    GPU # 0002 Detected : AMD Radeon R9 200 Series
    GPU DeviceId : pci\ven_1002&dev_67b1
    Detected Driver(s) Version(s) : 13.251.9001.1001
    INF : oem63.inf
    INF Section : ati2mtag_Hawaii
    5) Based on the output above, it seems that some extremely old drivers are currently installed (v13.251.9001.1001), and I need to remove the old drivers for the hardware above, and try to install the latest AMD drivers (v14.9)
    6) I rebooted the computer into Windows 8.1 "Safe Mode". 
        Instructions can be found here:  http://www.7tutorials.com/5-ways-boot-safe-mode-windows-8-windows-81
    7) I went to the folder called "C:\Drivers\DDUv13.5.1.3" and ran DDU v13.5.1.3 and selected "Clean and restart" (in DDU 13.5.1.3) to remove ALL of the existing AMD drivers and to restart/reboot the computer.
      - After removing the current display drivers (in safe mode) with DDU v13.5.1.3 and after the system rebooted, I then tried to perform a "clean install" of the latest AMD drivers (v14.9)
    8) Now perform a "Clean Install" of the new AMD graphics drivers.  Steps for performing a "clean install" (from AMD's website) are listed below:
    To perform a 'clean install' of AMD graphics drivers:
    You should make a system restore point before attempting, just in case
    1. IMPORTANT: All Windows Updates should be current, including the 'optional/suggested' updates
    2. IMPORTANT: Disable all anti-virus/ad blockers/anti-malware/ anti-anything before trying to install
    3. IMPORTANT: Netframework is required and must be the latest version. (from Windows Update)
    Download the drivers for your computer to the desktop. Follow steps 1-5 ( http://support.amd.com/en-us/download ).
    Do not use 'auto-detect and install (it might not detect your graphics card or best drivers).
    Delete existing drivers from your computer:
    In computer control panel select 'uninstall a program'
    For computers with Intel processors:
    Select AMD install manager and choose 'express uninstall all AMD software'
    Including the install manager.
    For computers with AMD processors:
    Select AMD install manager and 'custom uninstall' the graphics drivers and CCC only.
    Reboot into 'safe mode'
    In safe mode run Guru 3D's DDU
    Reboot
    Install the new driver suite.
    9) I went to the folder called "C:\Drivers\AMD\AMD-Catalyst-14-9-win7-win8.1-64Bit-dd-ccc-whql" and ran setup.exe  (Catalyst Install Manager)
         I selected "Express Install" as the default installation (highly recommended).
    10) Rebooted the system after the Catalyst software and video driver installation.

    In the end, I found out that the latest/newest Radeon drivers do not support the older Apple Radeon 2600XT graphics cards, so I was forced to remove the older Radeon 2600XT graphics cards from the system (so the newest/latest Radeon Catalyst Drivers would work).  I was then able to boot directly into Windows 8.1 Pro, and the AMD Catalyst software and AMD Catalyst Drivers worked perfectly with the R9 290 graphics card (in Windows 8.1 Pro).
    The only problem is that the AMD R9 290 is not supported in OS X, and now I can't boot directly into OS X because the Apple OS X graphics card drivers are missing and don't exist.  Apple hasn't added AMD R9 290 graphics card support to the latest version of Apple OS X 10.10 Yosemite (or 10.9).
    I posted a thread here about needing the AMD R9 290 graphics display drivers, but Apple still hasn't added the latest AMD Radeon R9 290 graphics card drivers support to the latest Apple Mac OS X 10.10.1 Yosemite operating system.
    Another big Apple fail! 
    So now we have a wonderful new high-end AMD R9 290 graphics card and all we can do is use our Apple Mac Pro computers as Windows 8.1 Pro computers, because Apple has not updated their Apple OS X operating system to support the newest/latest AMD R9 290 graphics cards.  (So we're stuck with using our Apple Mac Pro as a Windows 8.1 Pro computer) because Apple refuses to add the newest/latest hardware drivers to their latest Apple OS X operating system.  Anytime you purchase an Apple computer you are stuck using really old hardware because Apple fails to update their operating system with the newest/latest hardware drivers for the latest AMD R9 290 graphics card hardware.
    The only way to use the latest/newest hardware is with a Microsoft Windows 8.1 Pro computer.  Hopefully Apple will get this fixed immediately, but it's already been close to a year now and Apple still hasn't fixed the problem.
    We tried to contact Sapphire, and AMD, but both of them have said that it's a problem with Apple's Mac OS X operating system, and that only Apple can fix the problem and add the proper hardware drivers to their operating system.

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