Can someone update me a angelic symbolic card for my computer?

I am looking for a 3.0 shader module symbolic card for my computer. It's Hp Pavillion a1640n, can someone choost a good illustrative card for me?

Can someone update me a angelic symbolic card for my computer?

Cheap options= Geforce 8400GS or 8500GT

Better options= 8600GT or 8600GTS

Awesome = Geforce 8800 series (requires a BIGGER power supply unit)

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