graphics card supply

[Austain310]

ive got a dell 9100
p4 3 ghz ht
1.5 gbs ddr2 ram
6800gs
x-fi extreme sound card

im thinking upgrading to 7900gt but it requires 400 watts when i only have 375
i heard dell has quality psus and it would give more actual power than a no named brand...idk about ne thing besides watts regarding psus...help?

 

[[Spectre]]

OK two threads about dell psu's today? Any reason?