I am currently running an AM3 1100T phenomx6 on an 880g usb3.0 biostar board with 4x4gb ddr3 1600mhz ram, 1 HD 6870 XFX, OCZ fatal1ty 550w psu, 1x 500gb hdd 7200rpm,2x Sata3 60gb corsair force gt in raid 0, thermaltake v9 case, and a EVGA superclock cooler on the cpu. Will my current setup be able to swap out the gpu and power a new r9 270x sapphire toxic 2gb or will I need a new psu. Other card recomendations welcome if you believe i shouldnt buy this card.