“The PhotoEngine is a NuBus card with 4 DSPs (Digital Signal Processors) and will work with any Macintosh that has an available NuBus Slot.
With Photoshop 2.5.1 or 3.0 you will see dramatic increases in performance using PhotoEngine. For example, on a Power Macintosh performing a Gaussian Blur on an Image using a radius of 2, PhotoEngine is about 4.5 time faster than the Power Macintosh. Results are even more dramatic when PhotoEngine's speed is compared to Macintosh Quadra, Centris or Mac II series of computers.”
I have it installed in PM7100