Choosing a power supply unit is a bit difficult for me. I use AMD Phenom with standard power supply, and it gets burned because standard power supply is not too good in providing power. Besides, AMD processor needs large power consumption (about 135W just for the processor). I choose this Simbadda because here, in my town, it is difficult to purchase good power supply. Many dealers do not stock power supplies since these devices are too expensive to afford. I did some checking at computer stores to see which one is the best for me. Finally, I choose this Simbadda. It is not too expensive for me (just $50). This power supply can provide 500W of pure power and have good stability of power production. It is not getting hot when I use the computer for more than 5 hours. Also, it supports AMD Phenom and Cross Fire technology for my ATI RADEON graphic card (if I want to use two graphic cards at the same computer later). This device looks cool with blue led fan which can "make" my entire case becomes blue.