Mikhailtech posted a review on the GlacialPower GP-AL 650A 650 Watt Power Supply

A cool and quiet computer is an efficient one. The same adage applies to the contents of the computer. A power supply's function is to provide ripple free voltage to each of the other components in the computer. One of the biggest improvements that manufacturers can do to make their power supplies more competitive than others is making them run cooler and quieter. Therefore, high efficiency is very important. GlacialPower, a division of GlacialTech, introduces the 80 plus certified GP-AL series.

GlacialPower GP-AL 650A 650 Watt Power Supply Review