If you're not planning on doing 2 vid cards in SLI (and let's face it, it's a waste of money for most folks) don't get an SLI motherboard. Save some money. You don't get "double" the performance. You get maybe 10% more performance (more or less, depending) for twice the price of 1 card.
I would strongly recommend NOT relying on the PSU given in the combo package. Seems like something of a POS according to the reviews. If you're not going SLI, and you don't use that PSU (which I suggest), then perhaps a less expensive mobo is an option?
PCIe has the possibility for more bandwidth than AGP. Not as much a gap as AGP has over legacy PCI. It's a small difference, especially considering AGP (as an interface) isn't even close to being maxed out. The reason was for ease of manufacturing and for cost of production. It's cheaper to do PCIe for the board makers and vid card companies.
PCI Express (sometimes called PCIe by folks like me
) is the way to go. All high-end cards are being geared toward it. AGP card production has been cut in half. There are well over a dozen PCIe GeForce 7600GT options available, but for well over a year there was only ONE option in AGP (and it was sold out wherever you looked!!!), and it was priced 50% more than its PCIe brother. Now there are 2 in AGP (after a long delay), but I've long since switched to PCIe. Often you'll find the same card in AGP is stripped down or crippled compared to its PCIe brother.
Don't get an AGP board. Repeat, don't get an AGP board.
