Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

at the moment i have a dual monitor setup on my main PCIe gfx card.

I know that on windows it is almost impossible to have a second card (eg no thrills PCI card) running without having an SLI motherboard because of a driver issue. Well this was my conclusion after many weeks of research.

I was it possible to use a VM in order to utilize the secondary card as the default video output to feed another monitor?

let me know if you want me to clarify

Thanks :)

share|improve this question
Where did you get that idea from? I've set up dual monitors using separate cards under windows before. Before dual-head cards came about it was the only way to do it. – Andee Feb 15 '11 at 21:27
ive been struggling to install the second PCI card in windows it just doesn't recognize it as an adaptor. I currently have a dual head GFX card witch serves 2 monitors but what i need is the third output to come from the secondary card – Arturski Feb 15 '11 at 21:57
@Arthur can you be more specific about which motherboard this is and what cards you're trying to use? Because @Andee is right - it's trivial on 99% of setups to install a second card, especially if it's identical. – Shinrai Feb 15 '11 at 22:52
Hi Shinrai, I have a Dell Dimensions e520, its an Intel board with a PCIe slot for the gfx and 2 additional PCI slots. hope this helps. thanks for the prompt reply :) – Arturski Feb 16 '11 at 23:38

The VM will certainly output to a second monitor (I do this in the office), but for that to work the underlying PC will have to be supporting two monitors to start with anyway - and this is certainly very possible under Windows 7 using 'standard' (non SLI) graphics cards - my old desktop PC (Asus motherboard, I think - I don't have it any more) drove one monitor from its VGA port and a second from the DVI. Certainly a few motherboards do not like some mixes of cards and you should be able to find out what will work with a bit of Googling.

share|improve this answer
i have 2 monitors running from an ATI x1300 which is the maximum number of monitors that it supports. ive tried adding a second pci card but it doesn't get recognized at all. i searched around on google and it seems quite unclear whether this is possible or not. like I mentioned earlier i have fund some reference to the fact that windows has issues with more than one display driver. – Arturski Feb 15 '11 at 22:04
@Arthur - That's wrong, it's certainly possible. I've run SEVEN QUAD OUTPUT CARDS on a single Windows 7 machine before. See my comment on the question. – Shinrai Feb 15 '11 at 22:53

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.