be quiet! has been the leading manufacturer of power supplies in Germany and over the past year we have introduced many of their products to the US audience. We have taken a look at their Dark Power Pro 10 and Pure Power L8 power supplies and now we have the Power Zone 850W unit on our test bench today. This power supply is categorized as a more of a mainstream power supply as it has an 80PLUS Bronze certification. be quiet! has loaded it with great features though, including a fully modular design, a single powerful 12V rail and a 135mm SilentWings fan. Is this the power supply for you? Read on as we find out.