Yes, I just bought it today, because it was right next to the PC power and cooling lineup and I though that was what I had grabbed until I got back home and looked at the receipt. Should I go back and get a different one around 500-600 watts. On pcpartpick(dot)com, it is saying for my entire build that I need at least 330 watts, so would a 500 watt enermax be ok?
You don't have many parts, so like I said, the 500 watt is sufficient. Getting a 600 watt gives you more headroom if you want to add stuff later on. If it were me I would get a 600w corsair, antec, or silverstone.