|Enermax ECO 620W 80+ PSU|
|Written by HardwareSecrets|
|Friday, 10 July 2009|
Enermax ECO 80+ 620 W (EES620AWT) features a magnetic bearing fan with batwing blades for ultra low noise - design that is being called "twister bearing" by the manufacturer - and promises up to 86% efficiency. Let's see if it is really a good product.
The reviewed power supply is officially a 620 W power supply labeled at 40º C (which is great), and the product box says that it can handle up to 680 W peak. This is really nice to see, because some manufacturers would do the opposite, i.e. label the power supply with its peak power and then put in small letters on the box the real capacity with the word "continuous" after it. Kudos to Enermax.
ECO 80+ power supplies do not have a modular cabling system like the Liberty ECO series from the same manufacturer. This allowed the reviewed unit to be very small, being only 5 ½" (14 cm) deep.
As mentioned it comes with this "twister bearing" fan on its bottom, which is a magnetic bearing fan with batwing blades. This bearing has a higher life-span and reduces noise a little bit (1-2 dBA), while the shape of the blades improves airflow by 20-30% and also helps reducing noise. The rounded shape of the air inlet, called AirGuard by Enermax, helps reducing noise as well. HardwareSecrets