Whats better xfx geforce 6600 GT/ 128 MB DDR3 or Visiontek Radeon X1550 / 256MB DDR2 for a 300w power supply?

Answer 1

6600GT is the better card but consumes up to 48 watts. X1550 is a budget card that draws less than 30 watts.

X1550 should work with your 300W power supply but your PC would be less than exciting. Consider a bigger power supply that can support better and exciting graphics cards.