Micron dabbled in this. 2003 project Yukon (shutdown in 2004) and again 10 years later with 2013 “The Automata Processor” (erased from their website).
I guess the other comment wasn't too far off.
[1] https://www.naturalsemi.com/
I remember reading about it at the times, needing to have support by the firmware/BIOS/UEFI when you wanted to plug this into a system. Seems it was too complicated, and got moved onto a pcie-card with fpga. Makes me wonder if the automata rams as such are even produced, or they just bought Microns remainig stock, and go out of business if that runs out?
Wayback Machined captured statement from Micron, and where development continues:
[2] https://web.archive.org/web/20180807213400/http://www.micron...