STREAM is a combination of FPU and memory performance test.

AmigaONE (512MB RAM, PowerPC 750FX @ 800Mhz, AmigaOS 4 Pre3)

1) gcc -newlib -O3 stream.c -o stream.os4
-------------------------------------------------------------
Function      Rate (MB/s)  Avg time    Min time    Max time
Copy:        153.4213      0.2094      0.2086      0.2106
Scale:        140.3010      0.2289      0.2281      0.2301
Add:          143.2011      0.3360      0.3352      0.3381
Triad:        145.8209      0.3299      0.3292      0.3322
-------------------------------------------------------------

            VAMP    POWER-PC
Copy:      320    153
Scale:    177    140
Add:      266    143
Triad      150    145

So in this combined FPU and memory benchmark
68080 does beat 800 MHz PowerPC  4 to 0 ! 

:-)