I'm running dual monitors off a Radeon 9700 Pro
I also used to run to separate cards
Either way works except for that stupid boot thing where you HAD to boot from the PCI first or windows would not 'start' the PCI card
Answering the question...
I use it for alot of things, mostly for displaying information, I find it helps ALOT in Photoshop CS3 when I can move all the toolboxes off to the right monitor so they aren't in the way.
I can play a movie on one while playing WoW on the other (this is good)
Keep Internet windows open on one, game on primary (this is handy for walk-throughs
)
Also programs like Adobe Premiere CS3 you really need Dual monitors due to the sheer cluttered-ness of the program.
Limitations though..Sometimes games don't like dual-mons and the mouse can slide off onto the other and if you click, you end up back on your desktop with a minimized game. Some games do not allow them to be minimized and will immediately close while others may resume but the screen stays black, while some handle it very well. My solutuion was to make a hotkey for ATi Tray tools to turn on/off my 2nd monitor (control+alt+shift+tilde (~) ) And it works fine just as long as i do this BEFORE i start my game.
I know this also isn't really answering your question but:
You will want something like a ATi x800 Pro or a Nvidia 600GT
My reccommened list:
Intel E7300 (2.66GHZ Core 2 Duo CPU)
4GB DDR2 800mhz RAM
ASUS P5KPL-CM Motherboard (supports core quads for future)
ATi x800 Pro or a Nvidia 6600GT (Make sure the 6600gt is the PCI-e Version
)
500W PSU
Nice case, Just because you can make sure it still has good cooling...something like a iCute or Raidmax case.
Windows XP
Unless you want games/super speed/be more higher range too..
Add:
Higher spec mobo ie ASUS M3N78 Pro
850W PSU
Geforce 8800GT (or higher if you
really want it)
Note that these specs are taking into mind prices, and how long the items will stay current, plus the uses he stated he wanted.
Anything else I missed?