go easy, its my first pc build. i bought the ftw 1070 hybrid and included are t power cable extensions. two 8 pin male splitting to two 6 pin female ends. i assume this is for using different psu's? i got the evga 650 GQ psu that has two gpu power cables each with two 8 pin connectors. am i right in my assumption for the short extensions? also should i use one single gpu power cable with both 8 pin ends or two from the psu utilizing one 8 pin from each? or maybe i use two cable from the psu and hook 6 of both 8 pins from each cable hooking into those short extensions n hook both of those into the gpu? : ) hope this makes sense...!!! lol 

thanks in advance!!!