will i need a bigger psu?

[ictdude1]

i have a fairly good pc at the moment but the graphics card is very old and not upto the task of gaming like it used to (geforce xfx 7900gs 256mb ram)

the pc specs when i get the graphics card i want to get.

 

gigabyte ga-78lmt-usb3

8gb Kingston hyper-X blue 1600mhz ram (2 sticks of 4gb)

amd phenom ii x4 955 (using stock cooler)

1 normal ide dvd burner

GEFORCE EVGA GTX 660 TI -----------------------------THE UPGRADE CARD

wd black 1tb

1tb wd blue

1tb wd green

250gb seagate barracuda

 zalman z11 plus case including 4 fans

 

 

the power supply i have now is a corsair 500w psu..how many watts would you recommend i get ?

[Glenwing]

500-550W is more than enough for any single GPU.

[Breakdown]

That PSU will suffice.

 

Edit: Ninja'd by Glenwing.