RADEON HD4770 with 350W power supply?

I was thinking of upgrading my nVIDIA GeForce 7600GS with a RADEON HD4770, though I only have a 350W power supply, is it enough?

I don't know if this information is enough to tell if it will work, but here it is anyway:

os: Windows XP Home Edition, SP3
cpu: AMD Athlon 64 X2 4600+
mem: 3071 MB (2x512, 2x1gb)
gfx: nVidia GeForce 7600 GS
sound card: SB X-Fi Audio

Please inform me if there's anything else I might need to add! :foolish

 

I figure a minimum of 500W as a bare minimum and a brand name power supply too, none of this $20 stuff. Here's what AMD says.

 

hello, unfortunately like mentioned below your 350w PSU isn't enough to run the Radeon HD4770 graphics card.
So your only option is to get a higher wattage PSU, I would go for what's affordable so at least 500W

Dacads

 

This is a handy tool to calculate your power supply requirements. Its quite up to date with most hardware.
http://extreme.outervision.com/PSUEngine

 

Have a look at he following site for good name power supplies, and ones to avoid:
http://forum.pcmech.com/showthread.php?t=131195