My Asus gl502 has a motherboard problem that requires a full replacement. My model has the gtx 970m and 6700hq on the motherboard, but the exact replacement would cost around 500 dollars, but for 600 I could get a motherboard with a 980m and the same processor. Would I need an upgraded power supply to run the GPU or would it be fine with the power adapter that comes with the 970m model (100-240V at 2.34A)