This just in from Nvmax.com

I know I know, it's a power supply so how could I stay awake trying to review such a thing... Now then, 300 watts ATX is the current standard for mainstream computers so as you might expect FSB-Group has that covered with six different units. How can you have six different variations with a 300 watt power supply you ask? Let us dig a little deeper.

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So as you can see the FSB-Group supply cheerfully tramples over cheapo units. Even though it can't supply this amount of power for each sub power output if you have many devices that are big on the 12V line then cheaper units may not be able to cope; resulting in inoperability, instability or poor performance. The FSB-Group unit overcomes this by redirecting power from those leads not under excessive demand. So now you see that 300W power supplies do have differences.

FSB ATX FSP300-60ATV (PF) Power Supply Analysis