Yes, without any doubt.
The Antec EarthWatts 500W (EA500-EC) is a great PSU which has been made by Seasonic. It can deliver up to 575 W at below 50º C. It has a high efficiency (82%-85% until 400W). The voltage regulation on the +12V is excellent providing 408W on the two 12V rails (2x17A).
It provides two power cables for video cards.
It presents very low electrical noise level and run very quiet.
We made a great choice buying this PSU.
Excellent PSU, and not too expensive either. There are of course other quality choices, but one might consider the cost of an Antec Earthwatts the minimum one should spend for a new build; the quality you get is far from "minimum."
you should fine with that psu....i did a rough calculation on power supply wattage needed for your rig..., and with the current configuration of your rig, you should get around 350 watt psu...350 should give you a bit of extrra power...but i would get something like you are looking at 500watts. and give you future proof upgrades too...
Antec have a PSU calculator on their website, actually. You'll find it under 'Support' at the top of their home page. Of course it might tend to nudge you towards a bigger supply than you absolutely need...or am I being over-suspicious?
Are you planning on overclocking the processor or videocard rememember as you add voltage to those bad boys that Power requirements Skyrocket and the Earthwatts 650 might become a more attractable package to give you the headroom you need