Excerpt: The EarthWatts product is Antec's attempt to address the specific needs of those looking for the most efficient power supply available. The EarthWatts is 80 Plus certified; meaning that it has 80% or better efficiency at 20%, 50% and 100% of the power supply's total capability. A typical upshot to a power supply that is more efficient is that, because less power is wasted as heat, slower, quieter fans can be used to cool the power supply unit.
Conclusion: Presently, the 500W Antec EarthWatts EA-500 is available for $94.99 at NewEgg.com . This price seems too high for this level of power supply, and is more expensive than competitor offerings which have the same 80 PLUS efficiency rating. Even though you can shop around and find the EA-500 at a better price, I still cannot ignore how being eco-conscious must mean paying more.
Pros: 80 PLUS Certified efficiency, Excellent performance, Active PFC, Fully sleeved main power connector, Very high efficiency rating: PFC = 0.99, Extremely quiet operation, Excellent power regulation, Industrial grade components
Cons: Plain design and dull finish detract from the allure of efficiency, Peripheral cables should also be sleeved to match, 120mm cooling fan should be standard equipment