I don't think any cpu can be considered good for cpu editing today. I recently started toying with Adobe Premiere, trying to produce a movie from a FRAPS recorded IL2 session, and I was utterly appaled at how incredibly long it takes to render even a fairly simple edit :O
Seriously, I thought DVD->DivX encoding was time consuming, but this is *ridiculous*. Now, I don't know much about Premiere, so I might be doing everything wrong, but if what I see is the perfomance you get on a (granted, not too high end) XP3200+, I'm gonna ditch digital video editing. No point in buying something faster either, anything less than a 20x speedup wouldn't be worth bothering with for me..
= The views stated herein are my personal views, and not necessarily the views of my wife. =