Get the Antec Earthwatts. It is a solid PSU. I've got one running my Green Gamer, a low-power box with a 4850e on a 790GX board, and a HD4670 GPU. It is primarily a Teamspeak server. Other than brief interruptions for testing things (its other purpose), it has run 24/7 since February. I'm about to put a 720BE on it to do more things, and have no plans to replace the PSU.