Hello, thank you for taking the time to read my question. I have noticed similar questions asked, and I don't mean to be a bother but I must know. I have purchased an XFX R( 290 DD black edition. The system it will be going into is powered by a seasonic G series 650, my CPU is an 8320 on a GB 990fxa-ud3. The 290 calls for a 750W PSU and it makes me nervous. Should I get a bigger PSU?? I can't imagine the 290 sucks up more than 54A from the 12v or uses more than a combined system load of more than 650W but I can't be too sure. Thanks a lot for the help.