Supported dual monitor, Dell Dimension C521

I am trying to upgrade my Dell Dimension C521 to enable bi-ecrans support.  My first approach was to buy a video card, hoping to use the VGA integrated with a low end ATI video card in the Slot PCI - E.  While the video card is well worked, by using the onboard VGA in conjunction with a video card is an "unsupported configuration". It is either / or situation, which means that a monitor at the same time.

My second approach is to get a KFA2 GeForce 8400 GS graphics card, which seems to be one of the few that can be used in a low profile CPU and have a DVI and a VGA output. The problem, they do not work.  I say they, because I already tried two, and they both fail the same way: the computer seems to start up, but it is no output to the DVI cable.  If I plug the VGA cable and not on the DVI cable to the monitor, I just get a bunch of vertical lines on the monitor. I talked to a KFA technical support, although at first, they thought it would be a bad video card, they now think it might be related to the fact that power 280W does not meet the requirements of the Commission, which needs a minimum of a supply of 350W.

It seems to me that there are a few options left:

(1) find a video of lower power of cards that has two * real * outputs - DVI and VGA - (and not only replicated TV output). It will also take a low profile video card.  Any suggestions would be greatly appreciated.

(2) upgrade of power supply 350W or more and use the 8400 GS graphics card. Unfortunately, Dell does not appear to make a more powerful PSU for the C521.  Is there power supplies for another half height Dell computers that might work?

(3) as a last resort, a ditch the C521 and buy a more powerful computer.

Are there options that I left out?

Message edited by DrJJH on 09/23/2008 13:07

Tags: Dell Products

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