Omg that's a weak power supply. My advice is getting a power supply that can pull from 700 to 900 watt and has a 80+ Gold and higher certification to ensure there's no lack of power. Preferabbly Semi or Full modular to help on the airflow in the machine. I changed mine recently because I kept getting unexpected errors and SE kept calling it a connexion issue. Turns out that the build was asking too much continuously from the power supply so it wasn't able to supply properly and it tended to cause the net connection to give out, or the gpu. Long Story short, got a new one (A seasonic 860 watt 80+ Platinum) and didn't get any issues ever since.

The reason I'm suggesting a high watt count on the power supply is in case you plan to upgrade your build in the future, so having power to spare ain't a bad idea.