How many PCI Express 2.0 x16 slots?

Is there any reason to spend more for a MB with more than one PCI Express 2.0 x16 if I plan on using only one 8800GTS-512 GPU?

Are there any other cards that need this type of slot?

Most relatively newer boards come with PCI-Express x16 2.0 slots anyway don't they?

You could keep in mind that it all depends on how many PCI-Express cards you plan to use, whether they are video cards or something else. Most boards that I've looked at that only have one PCI-Express x16 slot usually have a couple of more PCI-E slots (x1 or x4) and then 2 or 3 regular PCI (non express) slots. You can use lower PCI-Express cards in higher PCI-Express slots. But you can't use a PCI-Express card in a regular PCI slot. But generally, most things come onboard now and there's no immediate use for PCI-Express cards except for video cards.

So as long as you don't have too many PCI-Express expansion cards to utilize, you won't need more PCI-Express x16 slots than you do video cards.

you can still buy single pcie boards the P45 chipset is "reported" to have 1 pcie 2.0 slots.

these boards are usually cheaper to purchase. but dont be put off a board just because it has an extra pcie slot

the 3 way sli boards are quite pricy and not worth it unless you are buying 3 8800gtx / 280gtx