Hardwarecanucks done a full review of the Antec Earthwatts 500W power supply

After the dust settles, it is obvious Antec has another winner on their hands with the Sonata III. It is not a revolution in terms of case design; rather it is the next logical step in the continuing evolution of the Sonata line. By adding a high-performance 500W power supply and making a few design changes, Antec has made this case even more attractive to potential buyers who are looking for a great case at a bargain price. Indeed, it is very hard to nail down any areas in which Antec may have done things differently.

Antec Sonata III Case & Earthwatts 500W Power Supply Review