hi i'm looking to buy and uprade my pc im looking to replace the GPU,PSU, and the ram ok so currently i have motherboard : ASRock G41M-VS3,GPU : geforce 720,ram 4gb DDR3,cpu: CPU Type QuadCore Intel Core 2 Quad Q9400, 2666 MHz (8 x 333), windows 10 64 bit , i think my psu its like 240-300...