You're aware that the Dell PS rating is done differently than what other manufacturers show?
Do a search in Dell|Talk and you'll see comments like...
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It has been stated by several forum users that Dell under rates the power supply, and they are in actuality a 300w or 350w power supply.
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Rob Hancock also has some information about this on his site (
http://www.roberthancock.com/dell/other.htm). The exception to this rule he describes as follows:
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| All this goes to show that for the majority of people, you really shouldn't need to upgrade your power supply. However, if your system is heavily upgraded with combinations of the following: multiple hard drives (especially 7200 RPM models), power hungry video cards (like the Voodoo5 and original GeForce - not so much the GeForce 2, much less the GeForce 2 MX), extra drives like a CD-RW or Zip drive, lots of RAM, many connected USB devices without their own power supply, or many additional expansion cards in general, it may be wise to upgrade the power supply.
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