I decided to go through my "miscellaneous memory" drawer last night and get it organized-a task I've been putting off for a long time. Much to my pleasant surprise I found a couple of 64mb 60ns FPM 168 DIMMs, but that's a story for another day. In any case, I had three matched pairs of 72 pin SIMMs, and I'd like to install at least some of them in my 7100. Everything I found was 60ns, so from that standpoint they should be fine as the 7100 calls for 80ns. As far as capacity, the sticks I have are 8mb(x2), 16mb(x2) and 64mb(x2). Most of the references I find for the 7100 say that it accepts a maximum of 4x 32mb SIMMS. I'm wondering what chance the 64mb have of a. working and b. being recognized at full capacity. Or, more specifically, was the 32mb module size limit put in place because of what was available at the time the computer was made(as I know Apple often did then and still does now) or is it a real limit of the logic board/memory controller?