That card recommends a minimum 400 watt power supply. The 430 makes it but you are cutting it close.
I believe you should have some "overhead" for a power supply to avoid any issues. Usually 50% more than needed. Power supplies lose output as they get older and you might add extra devices in the future.
You can use a power supply load calculator, available on most manufacturer's web sites (like Antec) to determine your approximate maximum usage. If the 430 meets the limit and it is all you can afford than it is a small risk.
But a 600 watt or better would be a safer solution.