What is Jackson technology?

[Soccerman]

I was lying awake last night and for some reason I started to think about this.. I don't quite understand what it does, or why it helps the performance of a CPU.. can someone explain?

 

[BurntKooshie]

Basically, it is 2-way SMT. Read more about SMT here (pages 8-10 of the article), with a general overview of SMT and Jackson over here.

If you're further interested, it might be wise to consult the sources used, which can be found in the biliographies of both articles.