Will this PSU handle 7900GS? what voltage lines are needed for GPU/CPU
I'm getting a used office branded PC with a non-standard 300W PSU (17A on the 12v line) I have a 7900GS 256mb which I want to put into this PC. According to psu calculators this psu suprisingly should be just enough with small reserve. But counting the 12v line alone does 17A mean there's 204W on the output for that? If the 7900GS is taking maximum ~100W and the CPU ~85W it should be enough but isn't the cpu/gpu taking power from different lines as well ? (3.3/5v). What about the other components ?