OCZ OCZ500MXSP ModXStream Pro 500 Watt Power Supply
Diablotek 650-Watt ATX Power Supply PHD650
The thing is that I have only little knowledge on PSUs, it all seems a mystery with amps, volts, rails.....
It might surprise you that the OCZ has a bit more of the important +12V power than the Diablotek 650.
If you look at the data labels (Diablotek first, then OCZ) you see that Diablotek claims 35Amps +12V and the OCZ 36Amps (432watts divided by 12volts = 36Amps).