Check out the links on this forum...
or try this site
http://www.amiga-society.de/ahwbook/oldnews.htmlI have a magnum 040 ,which is very similar
,different processor and voltage. (i think it`s just a re-badge)
Anyway its very stable, and well recommended.
There are a few software tweaks that can be found on Aminet that will dramatically improve the performance.