The first geforce 9800 gt I find calls out that this card can draw 105 Watts. Since we always need some spare power the size power supply I'd pick is (300+105) times 1.5 or your common 600 to 700 Watt power supply.
Bob
Sorry if I posted this in the wrong section, I didn't know where to put it!
Ok Im debating wether this computer, has enough power to suppley a geforce 9800 gt.
http://www.futureshop.ca/catalog/proddetail.asp?logon=&langid=EN&sku_id=0665000FS10124917&catid=

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