I upgrade my system rarely, so I'm picky about it when I do. Is this system going to be great for gaming etc for a long time? Please point out any bottlenecks that I may encounter in next 3 or 4 years.

AMD 6400 (3.2ghz dual core)
4gig DDR2 6400 ram
9800GX2 gpu
Case with 4 fans


Will this system last me a looong time? I guess what I'm most worried about is CPU...