Not on the subject matter: why you need a very fast compression?
Chose files for a week, left on the night — and all things.
In addition, winning in speed, probably will lose in quality or size — which is more important?
I myself clamp VirtualDub. There you can select any codec installed on your system. I remember in the divx codec there is a preset type, or restrictions on the fly — but the result is, of course, or a very large file, or crappy quality.