Oxide's "On the Metal" podcast is an incredibly fun deep dive into technical issues no one should have to deal with as told by people who lived them. "Deep" as in: software DRAM drivers, Ring -1 security, bespoke motherboard designs... I only wish there were more episodes.
https://oxide.computer/podcasts/on-the-metal
I just noticed they have a second podcast. I'll assume it's just as good.