depends what you use it for

and how much money you have

in this business there is always something shinier just on the horizon, my comp was out of date about 2 weeks after I built it, if I let myself I would spend a fortune on upgrades - every month !

if you have not run into problems then there is no need to upgrade IMHO

but if it was my set up (and I like to play 3d RTS games) I would look at the graphics card as the final piece of that particular puzzle

As far as I know, your options at the moment are Geforce2 MX DDR, Geforce2 32 or 64 GTS or Pro or Ultra, Geforce3, ATI Radeon as any of these will improve on the performance of a TNT based card due to their more recent graphics chips and higher clock speeds. Try price watch to check the prices.

review sites

http://www.lostcircuits.com/video/ http://www.anandtech.com/articles.html

Beware the SDRAM Gef2 MX which is the cheapest model, as it is significantly slower than the DDR version by all accounts and is probably not worth the savings.

But if you are not interested in games so much and you havent noticed any performance problems, the graphical quality of the TNT is unquestionably good enough for most applications, so no need to tinker unless you enjoy tinkering !?