Here are the specs...
http://www.foxconnchannel.com/product/Motherboards/detail_overview.aspx?ID=en-us0000193
N570SM2AA-8EKRS2H
Chipset: NVIDIA nForce 570 SLI
-AMD Sempron™, Athlon™ 64, Athlon™ 64x2, Athlon™ 64FX processors,
Socket AM2
- 2000 MT/s HyperTransport™
- Dual channel DDR2 800 / 667 / 533 x 4 DIMMs, Max 8GB
- 2 x PCIe x16, 2 x PCIe x1, 2 x PCI
- IDE x 2 + Serial ATA II x 8 w / RAID 0, 1, 0+1, 5
- 7.1 channel, Realtek (HDA)
- Dual GbE LAN (Marvell)
- IEEE 1394a x 2
- 10 USB 2.0 ports
So yes it is sli and i d'ont see why your card would not work...