NVIDIA is set to release one more nForce 680i variant that is slightly cheaper than the nForce 680i SLI. The cut-down nForce 680i will carry the nForce 680i LT SLI name and target extreme gamers. NVIDIA will manufacture the nForce 680i LT motherboards for various motherboard manufacturers.
This board is going to fall right in between the 650i and 680i chipsets with the feature set adjusted accordingly. The biggest hits will be a memory controller throttle, with support adjusted from DDR2-1200 to DDR2-800 and also the removal of one NIC port. Cooling will also be changed. While the 680i and 650i both have passive coolers, the 680i LT will be actively cooled.
Source: Daily Tech