There is no Nvidia AMD chipset that supports USB 3.0 or SATA 6.0 Gb/s, as Nvidia stopled producing chipsets before these were released. Your best option is to add in PCI slot cards for each those components. If you want an AM3 board, I would go with this... http://www.newegg.com/Product/Product.aspx?Item=N82E16813130236
for SLI support. Now MSI has boards that support Fusion technology, which is suppose to allow mixing of graphics cards but I don't trust it let. Also, ASUS Crosshair IV Extreme is suppose to be released some time, which should give you SLI support.