I got this chip from Motorolla back around 1990, and put it in my Amiga as a drop-in replacement. The benchmarking programs I ran reported something like a 3% boost in 3 or 4 of the tests, and no change in all the others.
And as mentioned in the above post, it increases incompatibility by some factor.
I remember my Hurricaine '020 board also gave a tepid perfomrance gain - and that was a 14Mhz '020! The reason was, the system lacked any RAM that took advantage of the better CPU.
If I recall, all accelerator boards for the Amiga get thier speed increase using either a combination of faster chip/faster RAM, or faster chip/cache RAM.
