UPDATE:
Well, actually the information I just posted above might be incorrect. I checked another source and the EVGA 560ti is said to have a TDP of 170W, not 210W. Also, my X51 has the 330W PSU, i7 4790, 8gb RAM, Samsung SSD, and a noctua 80mm exhaust fan mod and it will not boot with a GTX1080 installed. So, if it works with the 170W GPU I will be forced to add a higher Watt PSU or downgrade to the GTX1070.
I think I'm going to mod the **** out of it.