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First off Dynex is a off brand name for Best Buy, that is why it is so affordable. A year and a half ago I needed a new power supply for my new graphics card and only had so much money to spend on a power supply. Went to Best Buy and they did not have much units to pick from and they all where one hundred dollars or more, but seen the Dynex unit for under a hundred dollars so I got the unit. Got it home and put it in my PC and turn it on and it sounded OK for a month. After a month it started to get louder and louder, and I could not play a PC game with out having headphones on it was so loud. This power supply also dose not put out the power that is listed on the box. My PC was not getting the power that it needed, so it slowed down my computer. If you don't have a lot of money to spend and don't mind the loud noise then it's a good deal, but I would say get a little more powerful power supply then what you were originally going to buy to make up for the power that it dose not put out.