I went looking and found the answer to my questions about using multiple display adaptors.
Crossfire and SLI do not utilize the second GPU unless the Game is in full screen mode.
ISBoxer requires the game be in windowed mode, and as a result for boxing the Second GPU is idle :(.
In a multiple Display adaptor system without CF/SLI only the first GPU is utilized.
This has something to do with dragging items across monitors all the data must bein one GPU’s memory.
The second Display adaptor is only used to output data to the connector, so again the second GPU is idle
:(.
If you wantto check it out for yourself fire up MSI Afterburner, it’s free. Afterburner will display the GPU utilizations of each GPU.
I did setup a single 3840 X 2160 Display with CF and Eyefinity.
SWTOR looks cool on a giant display, the bezels are abit distracting, Very immersive :)