Before I buy - Non SLI mode?

Okay, a friend of mine is buying my current motherboard off me, and I couldn't be more happy. However, I need to buy a new motherboard ASAP.
I'm pretty certain I'm going to be getting an Expert.
However, one thing I am bit unclear on is running two pci express video cards. Not in SLI.
I have a 7900GTX that fulfills my gaming and 3D modeling needs, but I'm going to have three monitors in the very near future and as far as I know I can't mitotically spawn a new DVI connector on the 7900.
So, I'm looking at a 128mb Matrox P650. It will be fine and has some cool features that ATI and nVidia don't offer.
Will I be able to run both cards at the same time on the Expert at full bandwidth, or even a reduced bandwidth on the P650?
If not, is there a s939 motherboard that will let me run two completely different PCI Express x16 cards at the same time?

I believe any board will let you do that, doens't even have to be sli board/crossfire board, a couple of members have been running more then one video card for multiple monitors in plain pci so I believe it should work with pci-e as well.

futura2001 said:

Will I be able to run both cards at the same time ...

If not, is there a s939 motherboard that will let me run two completely different PCI Express x16 cards at the same time?...

Click to expand...

Yes and any one with two PCIe x16 slots. It's a Windows thing. All versions of windows since 98 will detect multiple graphics cards and their monitor(s) and there is rudimentary multi-monitor functionality too. But you'll also want Ultramon http://www.realtimesoft.com/ultramon/

Thank you guys, that does help clarify things considerably.
Maybe I should keep my eVGA/Jetway mobo. It has three x16 slots. One for single card mode, two for SLI. Wonder if I could have two 7900GTXes and a Parhelia series card in there as well just for the sake of excess and overkill. Although the PWMs would probably have a hernia trying to power all that. Meh, I ordered an Expert and I don't have a need for more than two cards and four monitors (well three, but one has dual inputs and will be hooked up to both cards) at this current time.
billb: Thanks, that should be helpful. Although Matrox offers many of the same features in their drivers and hardware already, including the much coveted monitor zoom feature which I am really looking forward to.