The ModXtreme line is made by Sirtec and rates pretty well overall. The 500 and 600 watt models both get Golden Awards from Hardwaresecrets. That's their highest award. The 700w model failed in HardOCP's testing but it was a 2008 model. Probably they just got a bad unit and I'm sure if you have a new one it's fine. All in all a unit I would not have a problem recommending.