It depends which features you're looking for.
Compared to fx5200, Ti4200 --> 30 to 120% better in Dx tests, and & 50 to 200% better in OpenGL (but AA 4X AF 8X).
Here's the <A HREF="http://www.3dchips-fr.com/article/0/0/99/8/geforce_fx_5200.html" target="_new">source</A>
You may have a look @ the link ; it's in french but has got many tables that'll speak clear to you
Internet <=> Share all we can.