Listed on the DFI website http://www.dfi.com.tw/Product/xx_pro...YPE=MB&SITE=US

Chipset

NVIDIA nForce 680i LT SLI MCP

Northbridge: NVIDIA 680i LT SLI
Southbridge: NVIDIA MCP55P
MCP55P = 570Sli or 590Sli??

R4z