Im siding with bgi123 - the corsair aint great but its not a system killer either,its a real 500w unit & will power a 970/1070/480
I think the 1070 is going to be wasted on a 6300 full stop without a monster overclock (4.5ghz+)
get a decent new board & cooler ,push 4.2/4.3ghz & either grab a 970 if prices drop when the 1070 releases or wait for the 480 - they both have a 150w or so tdp & the corsair will manage them,your motherboard is your primary concern not the psu.