Well the 5200 won't be able to play really new games at high settings with full use of direct-X 9 shaders (for instance, half life 2. Water doesn't show unless you do a switch to Direct x-8 rendering I've heard, though this isn't a problem. It just can't handle them, as the card was made with direct x-9 cabablilities for support of games, yet is too slow to really support them fully)
Though it is fine for games if your not bothered with settings, and will run new games fine.
You might want to update when you want to play newer games though.
Though for normal use, that card is honestly fine for a bit