That's not a good answer Ken Blake MVP. The PSU which Carey Frisch MVP
recommended would be a good choice since it is capable and well priced.
A PSU cannot be judged only on wattage, you also need to take into
consideration the efficiency, power output at normal operating temperature,
and most importantly, the amperage on the 12V rail.
Even though the PSU which Carey Frisch MVP recommended is only 70%
efficient, it's other specifications are ample enough that it would still be
If you want to help the environment, and lower your electricity bill then
you could try to find a PSU which runs at 80% efficiency or better. These
are normally more expensive so may not be worth your while. If you do take
this action, for the 80% efficient PSU, the minimum Wattage for your system
is 350W. The mimimum amperage on the 12V rail(s) is 20A.
Most current PSU's have two 12V rails. As a rule of thumb you can simply
add the amperages together. For example; the PSU which Ken Blake MVP
recommended has 12V1@14A and 12V2@15A, giving a total of 29A. This would be
suitable for your computer.
For more in depth details, some PSU reviews, and a forum dedicated to PSU's
you can follow this link.