Dell Vostro 420 upgrade to 8800gt?

[Frankasaurous]

I have a Dell Vostro 420 4 gb of RAM 2.93 Dual Core Processor 350 watts and currently runninga a 7600gt nvidia and was wondering if i could upgrade to a 8800gt without upgrading my PSU and also which one i should buy like evga or something

 

[wa1]

http://www.dell.com/us/en/dfb/desktops/desktop-vostro-420/pd.aspx?refid=desktop-vostro-420&cs=28&s=dfb
Is that your PC?

Without changing the PSU then HD4670/HD5670 or GT240/9800GT EE would be good...
Forget 8800GT, it's a power hungry card and old tech, you'll better with a newer tech.