sli 2x 980's question and psu

Solution
If you don't run applications that use CUDA or OPENCL or run GPU stability testing (e.g. FurMark) then you may be able to get away with a 650W PSU depending upon which brand and model of PSU you have. The PSU will also need to have a sufficient number and type of (i.e. 75 Watt 6-pin or 150 Watt 8-pin) PCI Express supplementary power connectors.

A 750W PSU should definitely be enough.
If you don't run applications that use CUDA or OPENCL or run GPU stability testing (e.g. FurMark) then you may be able to get away with a 650W PSU depending upon which brand and model of PSU you have. The PSU will also need to have a sufficient number and type of (i.e. 75 Watt 6-pin or 150 Watt 8-pin) PCI Express supplementary power connectors.

A 750W PSU should definitely be enough.
 
Solution