The answer wherein you are told to get a newer card misses the point of your question. I have and use very happily both an X1600 AGP and an X1650 PCI-E. They more than blow away the NV. The FX5200 was a piece of crap when it came out, perhaps only beaten as the worst card of its day by the S3 VirGE. Those who again remember the Decelerater, I apologize to. As the rest of your system is quite dated, (S478, 865PE chipset, DDR), you may not be able to game at as high a level as you might want. The video card you are asking about has distinct limits, (DX9, MSAA isn't much good here, low ROPs, limited internal bandwidth), but if you drop the resolution and limit the eye candy, you should be able to play online quite satisfactorily. I use both of mine on Steam and have no real problems. My games on Steam include Audiosurf, HalfLife 2, HL2 DM, Lost Coast, Quake 1, 2, 3, Trackmania, Unreal Tournament 3. i hope this helps. Good luck.