cards that need their own PSU

Umm, they make PCI-e PSU's for graphic cards. But there are no graphic cards that require their own supply. Most are powered by the main unit as long as its powerful enough, if its not they replace the main power supply.

But from what i understand, your asking what video cards require their own power supply. Their isn't a video card the "requires" its own sepperate supply of power.
 
No consumer cards require their own power supply, are you sure you aren't thinking of cards which require a separate dedicated connection to the power supply?
 
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