The Pilops "Storage Processor" seems like a good video candidate, it is a step-in ASIC for accelerating storage workloads. They have started sampling to certain customers, check out https://pliops.com.
I have looked at exactly that and could not find one with 4 ram slots.
I am trying to build a Mini-ITX workstation with 32gb of ram, but it appears that there aren't any motherboards available with that capability.
I actually have a fully functional Macintosh SE (not SE/30) sitting around, found it in a storage closet! It even has original MacOS on it! I don't know the exact specs but I am pretty sure it has 1MB of RAM and an 800K floppy drive.