It really depends on your CPU.
My CPU is Q6600 with a 8800GTS. Together with everything else, I need a 650 watt, 12v@34a at least in order to operate.
I currently have a 500 watt with 12v@34a tho, and I see BSOD when at full load.
Then i tried using 2 PSU at the same time, and my BSODs were gone. So i'm gonna get a 650-700 watt soon.
Your 430watt will definitely not work even with a Duo as supposed to Quad.
Google a PSU calculator to determine the wattage and 12v rail amp you need your PSU to be.
But for sure, 430W.. impossible.
And don't forget to consider the # of connectors, and noise