Our test platforms:
First machine -
Blue and White G3
350mhz G3 processor (Pentium II 400-450 equivalent)
1MB of level 2 cache at 175mhz
128MB of RAM
100mhz memory bus
The video cards were tested in the 66mhz 32bit PCI slot
Mac OS 8.6

The G3 was graciously lent to us by Modern Accessories for Computers (M.A.C.) of Berkeley, the best Macintosh store in the Bay Area.

Second machine -
Umax S900 Power Macintosh clone
604e 200 processor (Pentium Pro 200 equivalent)
512k of level 2 cache at 50mhz
160MB of RAM
50mhz memory bus
The video cards were tested in a 33mhz 32bit PCI slot

We tested 3D speed with the Unreal flyby and Quake II. We tested 2D performance with Norton Utilities System Info.