I wouldnt trust those power supply if I were you- I rather trust those vip 400 silver which has an active pfc. Those tin cans are worth 500 bucks so I am really sure they arent given good for average syste. But according to you system specs You allready have a 9600 gso so I dont know why you want a new card now.
http://www.guru3d.com/article/geforc...int-of-view/14
Atleast change the power supply to something like the one I mentioned or better vip 390w or 460w. Dont change the card now now- as it is the screen's resolution is low compared to what we get now.