Best cpu upgrade for Dell 8400

[infrared]

what is currently the best processor upgrade in terms of maximum performance for the Dell dimension 8400 PC?

 

[englandr753]

Type your question or part of it in the search box (top middle of screen) and you can find links to similar or the same questions as you are about to post. Always do this 1st before posting as you can save yourself from trying to explain yourself when someone else already has and we have already answered their questions for them and for you:

http://www.tomshardware.com/forum/228474-28-dell-dimension-8400-upgrade-dual-core