Does nvidia geforce GT 520 support all games????

min PSU is 300W
http://www.geforce.com/hardware/desktop-gpus/geforce-gt...

I think you would be ok with that card on your PSU since it only uses about 30 watts but you may not be happy with the resolution and quality of the games with that card. That is a low end card. What is your budget?

No that card will not run those games well. Maybe at 640x480, lol. You will need a bigger PSU to run a card that will run those games. Best thing for you to do is give us your budget for upgrading and we will try to help you better.

Simple answer No not good enough.. I would recoment a new power supply and a 550 as a min or a 6850 if you are a red fan..

Thent

what about nvidia geforce GT 430 1GB DDR3???????? does this support in 255W PSU and is it gud for gaming??????

How about giving us your budget first. Honestly a 255w generic PSU isn't really good for any decent gaming card. The cards you have asked about so far require 300w, as someone else allready said.

Those are all low-end cards. None of them are good for gaming. Post a budget and we'll figure something out  

We need more info on your power supply.

How many amps or watts on the 12 volt rail

Also if it is half decent and the system is a power hog, you still have some low end options, just do not expect high settings in most games.

AMD's new 7750 is very impressive for a card that does not take more then about 45 watts  

EDIT, is your case low profile(thin tower)?