Re: 2 MSI 680's no option for SLI.
You would think NVIDIA with all their brilliance could figure out how to take the uneven memory of the 2 cards and evenly distribute it between them.
ASUS Sabertooth X99
Intel 5930K 4 GhZ
16 GB Gskill RipJaws DDR4 3000
EVGA 980Ti Classified
Samsung 840 Pro 256GB
ThermalTake ToughPower 850W PSU
Windows 8.1 Pro 64bit