Two pcie gfx cards, same desktop, different resolution

Posted on 2006-04-28
Last Modified: 2008-02-01
Hardware: ASUS Mobo A8R32MVP | x-800 Radeon PCIe gfx card | x-800 Radeon GTO PCIE GFX card | 2 gb RAM | 300 gb SATA
Software: ATI Catalyst Control Centre 6.4 + ATI Hydravision under Windows XP MCE
I am looking to get a TV display from one GFX card, at a TV resolution, and VGA or DVI display from the other at a higher resolution
But I want the same picture on both the TV and monitor, subject to resolution
This doesn't seem to be possible. I can get an extended desktop across both displays quite easily
I can clone the display from each card (both have dual outputs), although not at a different resolution and with some quality issues, but I cannot get the primary display on the GTO card to be a clone of of the other card's display
I have a feeling I am asking the impossible, although quite why I cannot see.
Can anyone help?

Question by:SteveHodge
    LVL 70

    Expert Comment

    Yes, you're asking the impossible.   To clone the displays, they have to have the same resolution.   As you've correctly noted, you can have an extended desktop and simply move the display elements you want to either display.    ... the only solution I know of that will let you do exactly what you want is to set both displays to the same resolution (the max supported by your TV would be the obvious choice).

    Author Comment

    I acn see why the same gfx card cannot clone at a different resolution, but I can't see why a separate card can't do it, if it can extend the desktop at a different resolution. Is it because the resolution setting come from the OS rather than the GFX card?
    LVL 70

    Accepted Solution

    Yes, the OS builds the display -- the graphics card(s) just displays it.   It can't build the SAME desktop at two different resolutions.


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