There is a reason why it is a Gold rated 850 watter for $119.
There is also a reason why it only has a 2yr warranty.
There are also many reasons why people don't use these type of psu's to power their beloved systems.
The psu is the most important component you will buy, why skimp on it.
You could get a decent one for the same money, actually cheaper!http://www.newegg.com/Product/Product.aspx?Item=N82E16817207001