Grabbed this off eBay for $15 BIN the other day. FedEx says it should be here today (its out for delivery actually). Its a small pizzabox chassis (type 7011), just barely larger than a 610 or 6100. It has a 45 mhz "POWER Single Chip" CPU, and I don't know how much RAM in mine yet. It also nicely has more expansion than a 6100 (8 RAM slots, 1 PDS slot, 2 MCA slots). Later 7011s (model 250) are special in that they were the world's first machines to use the 601 when they came out in October 1993. I like to think of it is a souped up 6100, just not made by Apple, and running UNIX.