Cheap pci card Help

[JDlumous]

Can anyone tell me which is the best Nvidia PCI graphics card that dosn't need a additional power source?

I have an old computer and what to squeeze the last bit of life from it.

Im already playing starcraft 2 with the card i have, but want to make sure i can play guild wars 2 before i buy it.

I did purchase a geforce 7800 gtx off ebay, but it needs additional power and i dont have the lead in my system box

 

[mouse24]

What power supply are you using its possible you MAY not even need to get a different card you could just use a molex to 4pin adapter (im assuming its 4pin and not 6 or 8)

it states you need a 500w with 22a on the 12v rail: http://www.tomshardware.com/reviews/nvidia,1171-6.html

But this page states it needs 500w with 26a on the 12v rail: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150100

hrmmm