[net.micro.pc] speed-up boards

harris@ecsvax.UUCP (Mark Harris) (07/03/86)

I am interested in relatively inexpensive speed-up boards for the
IBM PC (with EGA).  I've seen a couple recently that looked
attractive:
  Surprise  from Maynard @ $249
  SuperCharger  from Dynatec Systems  @299

What I'd like to know is:

Are there any reviews in print?  Has anyone had any personal
experience with these boards?

What compatibility is sacrificed?

The prices shown are list.  Are there cheaper sources?

Thanks in advance.