about HD7850 watts

[Amr159]

my pc spec :
dell optlix 775 socket
core 2 quad q6600 2.40 GHz
4 gb ram
geforce gt 630 2gb ddr3
470 gb storage
and i run them with dell l305p power supply but now i will upgrade my gpu to radeon hd 7850 1gb gddr5 can this power supply handle the hd7850 or i need to ubgrade the power supply

 

[Dark Lord of Tech]

A Radeon HD 7850 NEEDS 21 amps on the 12+ rail and a 500 watt power supply with 1 - 6 pin PCIE power connection.

The Dell supply is not sufficient to power the card.