Q:

ATI graphics card to feed three monitors

Assuming the monitors can take any kind of port and signal (digital/analog, DVI/HTMI, VGA, DisplayPort) so as to keep this only video card related:
I'm looking to get a three-monitor setup using a single ATI Radeon HD 5XXX card. If I understand correctly the ATI hardware, the DVI and HDMI ports share the same video feed (since they're exactly the same digital video signal). However, what about VGA and DisplayPort?
For instance take this video card from Gigabyte:

It has DVI, VGA and DisplayPort connectors. Can it feed three monitors?
If not, what card should I get that can feed three monitors? I think it would need to have two DVI and one DP. The monitors are 1920x1080 and two 1280x1024.
Here is another image. This one has a DVI, VGA and HDMI:

A:

Reading AMD's ATI Eyefinity Validated Dongles page I can confirm this:

A maximum of two VGA, DVI, HDMI or passive DisplayPort connections can be used.
Active DisplayPort is required for three or more connections.

That means I can connector three monitors, two using the DVI/HDMI/VGA ports and the other using DisplayPort, either directly or via an active converter.

