If you have 17A on the 12V or over (on your PSU), then get an HD4670. It's the best power-budget-gaming card.
Let me make sure I get it:
what you mean is if I open the case and find out my PSU does not reach 17 A or 12 V, then I cannot have HD 4670; and in any case I cannot have 9600 GSO for my system, is that right? Thanks!!