IIRC, because the IIci was the de facto standard workstation of the DTP Industry, Apple was pretty much forced to make a PPC upgrade card for it. That was a HUGE user base and Apple had already had a nasty legal issue, spear-headed by them due to the Dirty ROM issue regarding their pre- IIci workstations. I wasn't aware that Apple made any PPC upgrades for '040 systems. I was under the impression that such beasties would have all been second source products.

Now I'm wondering if the cards in the 'fritter pics were both IIci cards? :-/

At any rate, one reason hit me as to why the ARM 680X0 (?) Bridge ASIC in the pics is only 160 pins. System RAM was located on the host MoBo, with only SRAM L2 Cache on the PPC Card. On the PBX 68030 Bus Bridge, System and L2 Cache are both on the Fast I/O Bus. Dunno . . .

. . . any other plausible reasons for the Bridge ASIC to grow in pin count? :?: