well, technically my computer has a 250w Dell Standard PSU. Dell rate there PSU's on AVERAGE power rather than maximum power output.http://forums.us.dell.com/supportforums/board/message?board.id=dim_video&message.id=45483
So it really is a 345watt PSU
I haven't added anything to the Orignal dell except a 512mb ram and a PCI wireless card.
anyway, i checked here: http://www.extreme.outervision.com/PSUEngine
and it rates the power usage of a 7600 GT lower than a 9800 Pro, I have the 128mb version OC at 365MHZ
anyway, so any answers on my orginal question?