[crobertson]

Is there a 400+ watt power supply that will work with the HP dc5700 small form factor pc.

I purchased the GeForce 7300GS and it needs atleast 350w.

I have searched the net and can find nothing that will fit.

 

[twajetmech]

From what I can gather its a proprietary psu from HP:
HP Model: DPS-240HB A / API5PC52 / PS-6241-07HP Power supply
Part #: 404472-001
Spare #: 404796-001
240 Watt BTX power supply with passive power form correction (PFC)
compatible HP/Compaq Model: HP Compaq dc5700/dc5750 Small Form Factor PC

It has an odd shape, so no I don't think you'll find anything compatible other than an HP repacement (of same wattage)